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mina [271]
3 years ago
12

Someone give me answers & an explanation!

Mathematics
2 answers:
Darina [25.2K]3 years ago
7 0

Answer:

all work is pictured and shown

Paladinen [302]3 years ago
5 0

Answer:

a = -18

b = 7

c = 27

Step-by-step explanation:

given f(x) = 5x - 8

Simply go down the table and substitute each value of x into the function and report the final answer:

when x = -4,

f(-4) = 5(-4) - 8 = -28

when x = -2

f(-2) = 5(-2) - 8 = -18 (Answer a)

when x = 3

f(3) = 5(3) - 8 = 7  (Answer b)

when x = 7

f(7) = 5(7) - 8 = 27  (Answer c)

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7. Cell phone plan A costs $30 per month for unlimited calling plus $0.25 per GB of data. Cell phone plan B
Lesechka [4]

Answer:

Part a) The linear model that represents the monthly cost of each plan is

<em>Plan A</em>

y=0.25g+30

<em>Plan B</em>

y=0.15g+40

Part b) The plans cost the same for 100 GB of data

Step-by-step explanation:

Part a) Write a linear model that represents the monthly cost of each plan if the customer uses g GB of data

Let

g -----> the GB of data

y -----> the monthly cost

we know that

The linear equation that represent each plan is equal to

<em>Plan A</em>

y=0.25g+30 ----> equation A

<em>Plan B</em>

y=0.15g+40 ----> equation B

Part b) After how many GB of data will the plans cost the same?

Equate equation A and equation B and solve for g

0.25g+30=0.15g+40

0.25g-0.15g=40-30

0.10g=10

g=100\ GB

therefore

The plans cost the same for 100 GB of data

7 0
4 years ago
Domain of (x-5)(x+5)
soldier1979 [14.2K]
X2 -25 that’s the answer but it’s x squared 2 if that makes sense
4 0
3 years ago
Po can choose a 10 GB or a 20 GB iPod in either white, pink or black. Find the size of the sample space.
Vaselesa [24]
The sample space is 6
4 0
3 years ago
Arrange the numbers in increasing order.
SVEN [57.7K]

Answer:14.200,14.204,14.210,14.240

Step-by-step explanation:

8 0
3 years ago
I need help with this sombody
stepan [7]

Answer:

C. 30(-2)= -60   I think

Step-by-step explanation:

Sorry if it's wrong

8 0
3 years ago
Read 2 more answers
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