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Volgvan
3 years ago
11

A contest on a game show receives -25 points for each wrong answer what integer represents the change in periods after three wro

ng answers
Mathematics
1 answer:
Paladinen [302]3 years ago
7 0
To represent the change in points, you can think of it in two ways:

1.  You will go down 25 points for every wrong answer, so -25 + -25 + -25 would represent what is happening.  They are all negative, so you keeping moving down in value.  

2.  You can also think of this as 3 groups of -25. 

Both answers are -75.  The answer is negative because the change was down in points.

-75 is the integer that represents this situation.
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Tonya and Leo each bought a cell phone at the same time. The trade-in values, in dollars, of the cell phones are modeled by the
Paha777 [63]

Answer:

The answer is Tonya's phone had the greater initial trade-in value.

Leo's phone decreases at an average rate slower than the trade in value of Tonya's phone.

Step-by-step explanation:

Given

Tonya

f(x) = 490 * 0.88^x

Leo

x \to g(x)

0 \to 480

2 \to 360

4 \to 470

Solving (a): The phone with greater initial value

The initial value is when x = 0. So, we have:

f(x) = 490 * 0.88^x

f(0) = 490 * 0.88^0

f(0) = 490 * 1

f(0) = 490

From Leo's table

g(0) = 480

By comparison;

f(0) > g(0)

i.e.

490 > 480

<em>So: Tonya's had the greater initial trade-in value</em>

Solving (b): The phone with lesser rate

An exponential function is:

y = ab^x

Where:

b \to rate

For Tonya

b = 0.88

For Leo, we have:

(x_1,y_1) = (0,480)

(x_2,y_2) = (2,360)

So, the equation becomes:

y = ab^x

480 = ab^0 and 360 = ab^2

Solving 480 = ab^0, we have:

480 = a * 1

480 = a

a= 480

360 = ab^2 becomes

360 = 480 * b^2

Divide both sides by 480

0.75 = b^2

Take square roots

0.87 = b

b=0.87 -- Leo's rate

By comparison; Leo's rate is slower i.e. 0.87 < 0.88

6 0
2 years ago
Sue has 2.20 in dimes and nickels. if she has 13 more dimes than nickels, how many of each coins does she have?
svetlana [45]
There are 19 dimes and 6 nickels
8 0
3 years ago
Given the function f(x) = 3 x - 21 + 6, for what values of x is f(x) = 18?
IrinaK [193]

Answer:

X=2

If 21+6=27 then subtract what f(x) is (which is 18) from the 27. 27-18=6 then 3x2=6 so therefore your answer is 2. Hope this helps!!

4 0
3 years ago
Read 2 more answers
There are a total of 64 students in a filmmaking club and a yearbook club. The filmmaking club has 14 more students than the yea
sattari [20]

Answer:

x + y = 64

x = y + 14

Step-by-step explanation:

Given:

Total number of student = 64

x = number of students in filmmaking club

y = number of students in yearbook club.

Computation:

So,

x + y = 64

And,

x = y + 14

So

Number of students in yearbook club = 25

Number of students in filmmaking club = 39

5 0
3 years ago
Deminsions of a swedish flag in inches
Tanya [424]

Answer: 24.75 x 1.5 x 1.5 inches

Step-by-step explanation: Hope this helps!

8 0
3 years ago
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