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
Georgia [21]
3 years ago
12

Please solve for a, b, and c

Mathematics
1 answer:
rusak2 [61]3 years ago
3 0

The table is:
Number of washes denoted by x: 0, 8, 12
Amount left on card denoted by y: 30, 18, 12
 
a.       Write an equation that shows the amount of dollars left on the card
Solution:
18 – 30 divided by 8 – 0 = -12/8
On simplest form is -3/2
 
The equation is y = -3/2x + 30
 
b.      Explain the meaning of the negative slope above.
As the number of car washes increase, the dollars left on the card decreases.
 
c.       What is the maximum value of x?
0 = -3/2x + 30
2/3 x 3/2 x = 30/1 x 2/3
Cancel 2/3 x 3/2 and reduce 30 by 3 we get 10, 10 x 2
x = 20

Read more on Brainly.com - brainly.com/question/7171213#readmore
You might be interested in
What is the volume of a sphere with a diameter of 7,5 cm, rounded to the nearest
Nastasia [14]

Answer:

179.59

Step-by-step explanation:

.........................

4 0
3 years ago
9x + 3 – 7x + 4<br> Help me out please?
SOVA2 [1]

Answer: The answer is 2x + 7.

Explanation: First, we need to add the numbers:

9x + 3 – 7x + 4

9x + 7 - 7x

And finally, we combine like terms:

9x + 7 - 7x

2x + 7

8 0
2 years ago
Read 2 more answers
11) Identify the range of this set of ordered pairs: <br><br> {(3,5), (2, 0), (-6, -1), (5, 1)}
Veronika [31]

6

Range is the difference of min and max y values

3 0
3 years ago
A student answers all 48 questions on a multiple-choice test by guessing. Each question has four possible answers, only one of w
lubasha [3.4K]
The best option is C. 0.0823mean = np = 48*1/4 = 12 

SD = sqrt(npq) = sqrt(48 *1/4 *3/4) = 3 

aplying continuity correction for using a continuous distribution for a discrete one, 

"exactly 15" means 14.5 to 15.5 

z1= (14.5-12)/3 = 0.833 , z2 = (15.5-12)/3 = 1.167 

P(0.833 < z < 1.167) = 0.0808
8 0
3 years ago
Read 2 more answers
Which ordered pair is the solution to this system of equations? Use the elimination method.
Amiraneli [1.4K]

Answer:

x=5

y=5

I think sorry if it didn't help ;)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which one of the binomials is a factor of this trinomial?
    9·1 answer
  • The results from the last quiz that Mr. Tham gave his class are 10, 15, 25, 75, 75, 77, 80, 83, 85, and 90. Which statistical me
    9·2 answers
  • The expression 17 + 2 × 9 ÷ 3 + 4 × 6 ÷ 8 is equivalent to what number?
    15·1 answer
  • Is this right? Please HALP ASAP!!!
    8·2 answers
  • Which quadrilaterals are classified as types of parallelograms
    8·1 answer
  • For an experiment, Marie brought a container filled with 30 grams of snow into a warm environment. After 5 minutes, 21% of the s
    14·2 answers
  • Find the hypotenuse of a triangle with a base of 11 cm and height of 9 cm
    12·2 answers
  • The question is: "Without actually graphing, describe how the graph of y = ( -2^(x+17) ) - 4.3 is related to the graph of y = 2^
    6·1 answer
  • Find the length of “b”, to the<br> nearest tenth, using the<br> Pythagorean Theorem.
    11·2 answers
  • Y = 5x + 9 (-2, -3) pls help me
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!