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Margarita [4]
4 years ago
8

A store charges their customers based on the number of items that they buy. Jane bought four items and was charged $15 and Georg

e bought twelve items and was charged $39. Write a function to model the cost based on the number of items you buy. Then determine how much you are charged if you purchase 22 items.
A) f(x) = 3x + 3; f(22) = 69
B) f(x) = 3x + 3; f(22) = 65
C) f(x) = 3x + 3; f(6.33) = 22
D) f(x) = 1/3x+3;f(57)=22
THANKYOU SOOOO MUCH!!!!!!!!!!!!!!
Mathematics
1 answer:
jekas [21]4 years ago
5 0
It's pretty easy, just plug in 22 for x for the first 3.

Which ever shows the answer is it!

THE ANSWER IS A!!!
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