A) because 15 i would assume because 5 x 4 equals 20 so i did 5*3=15
Answer:
Step-by-step explanation
I think this might help you.
Answer:
The function would be linear because the rate of change is constant.
Step-by-step explanation:
Given

per minute
See attachment for complete question and options
First, we write the function that calculates the cost (C(t)) for t minutes.
This is calculated as:



Rewrite as:

A function that has the above format is referred to as a linear function which has the general format

Where
m represents the slope/rate and it is constant
From the list of given options, (a) is correct.
So we need have to understand that if we were to solve this, our answer would be 7 less than 'p' with that information we get p-7.
Store B has the lowest price.
Store A
2lb = $8.44
1lb = $4.22
0.5lb = $2.11
(1lb + 0.5lb) 4.22 + 2.11 = 6.33
1.5lb = $6.33
Store B
1.5lb = $5.85