1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mars1129 [50]
2 years ago
6

I NEED HELP FAST GET BRAINLIEST AND 100 POINTS:

Mathematics
2 answers:
natulia [17]2 years ago
8 0

Answer:

Function 2 shows a greater rate of change, because Henry spends $7 per month and Galvin spends $5 per month.

Step-by-step explanation:

<u>Function 1</u>

Money remaining in Galvin's money box:

\begin{tabular}{| c | c |}\cline{1-2} Number of Months (x) & Amount Remaining (in \$) (y)\\\cline{1-2} 1 & 80\\\cline{1-2} 2 & 75 \\\cline{1-2} 3 & 70 \\\cline{1-2} 4 & 65 \\\cline{1-2}\end{tabular}

We can calculate the rate of change by using this formula:

\textsf{rate of change}=\dfrac{\textsf{change in y}}{\textsf{change in x}}

\implies \textsf{rate of change}=\dfrac{75-80}{2-1}=\dfrac{-5}{1}=-5

Therefore, The rate of change of function 1 is -5 which means that Galvin spends $5 per month.

<u>Function 2</u>

Money remaining in Henry's money box:  

\sf y = -7x+80

This is represented as a linear equation: y = mx + b
(where m is the slope or "rate of change" and b is the y-intercept of "initial value)

Therefore, the rate of change of function 2 is -7 which means that Henry spends $7 per month.

<u>Conclusion</u>

Function 2 shows a greater rate of change, because Henry spends $7 per month and Galvin spends $5 per month.

emmainna [20.7K]2 years ago
5 0

Answer:

Function 2 shows a greater rate of change, because Edwin spends $9 each month and Adam spends $7 each month.

I found this out because for Adam, you simply subtract the y-coordinates from each other and get 7 each time. Edwin clearly shows that he Spends $9 each month with the negative sign.

Step-by-step explanation:

You might be interested in
Jazmin takes a ride share service home from the airport. The ride share service charges $5 as an initial cost to pick her up, an
Anon25 [30]

Answer:

38.75 = 2.25 m + 5

Step-by-step explanation:

It is given that :

Jazmin took a ride share service from airport to home.

The total cost of the ride service from airport to home is = $ 38.75

The ride service charged an initial cost for picker Jazmin = $ 5

Cost of the ride service for every mile = $ 2.25 per mile

Let the number of miles = m

Therefore, the equation that represents the situation is :

38.75 = 2.25 m + 5

where, m represents the number of miles.

6 0
2 years ago
-x+2y=9<br> -7x-2y=-1 <br> Solve each system by elimination
g100num [7]
X - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me
5 0
3 years ago
Which of the expressions are equivalent to the one below? Check all that apply.
sdas [7]

Step-by-step explanation:

We need to find an expression that is equivalent to 4×(8+3)

We know that,

4×(8+3) = 4(11) = 44

Option (1).

(4 • 8) + 3 = 32+3 = 35. It is incorrect

Option (2).

(8 + 3) • 4 = (11) 4 = 44. It is correct.

Option (3).

4 • (3 + 8) = 4(11) = 44. It is correct.

Option (4).

4 • 8 + 4 • 3 = 32+12 = 44. It is correct.

Hence, the correct options are (2), (3) and (4).

8 0
2 years ago
The results of a common standardized test used in psychology research is designed so that the population mean is 145 and the sta
anygoal [31]

The value 155 is zero standard deviations from the mean, because x = μ , and therefore z = 0.

<h3>What is Standard Deviation?</h3>

The standard deviation is a measure of the amount of variation or dispersion of a set of values.

The key concept we need to manage here is the z-scores , and we can obtain a z-score using the next formula:

z = (x - μ)/σ      ..............[1]

Where

z is the z-score.

x is the raw score: an observation from the normally distributed data that we want standardize using [1].

μ is the population mean.

σ is the population standard deviation.

These standardized values have always the same probability in the standard normal distribution, and this is the advantage of using it for calculating probabilities for normally distributed data.

A subject earns a score of 155.

From the question, we know that:

x = 155.

μ = 155

σ = 50

Having into account all the previous information, we can say that the raw score, x = 155, is zero standard deviations units from the mean. The subject earned a score that equals the population mean. Then, using [1]:

z = (x - μ)/σ

z = (155 - 155) / 50

z = 0/50

z = 0

As we say before, the z-score "tells us" the distance from the population mean, and in this case this value equals zero:  

x = μ

Therefore, z = 0

So, the value 155 is zero standard deviations from the [population] mean.

Learn more about Standard Deviation from:

brainly.com/question/13905583

#SPJ1

8 0
2 years ago
the school fun fair made 1,768 on games and 978 on food sales. how much money did the fun fair make on games and food.
Roman55 [17]
The school made 2746 dollars. 
4 0
2 years ago
Read 2 more answers
Other questions:
  • Write this ratio as a fraction in simplest form without any units. 8 yards to 21 feet
    7·1 answer
  • A dinner plate has a diameter of 12 centimeters. What is the approximate area? 37.68 cm (ik how to do it i just dont know whethe
    9·1 answer
  • (−14x^3y^3+4x^5 y6)÷(2x^4y^5)
    6·1 answer
  • Which equation has the solutions X=1 +-SQRT 5?
    14·2 answers
  • Students in a representative sample of 69 second-year students selected from a large university in England participated in a stu
    14·1 answer
  • The triangles below are similar.
    10·2 answers
  • Why might you need to use the addition or subtraction property of equality more than once after you have used the distributive p
    15·1 answer
  • Which choice represents the simplified exponential expression? (11^-2)^7<br> 19 points!!!!
    7·1 answer
  • A parabola is graphed such that the axis of symmetry is x = 3. One of the x-intercepts is (5, 0). What is the other x-intercept?
    7·1 answer
  • (Science/math) please answer fast. read the problem below. please don't report if i got subject wrong
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!