Question

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Answer 1

from part A, you should have f(x) = 85 + 15x or f(x) = 15x + 85. I think you posted that earlier

Answer 2

x is the number of charms
f(x) is the total cost. y is the same as f(x)

what you do is graph y = 15x + 85. This will be a diagonal line that slopes upward
then graph y = 85 and y = 250. These two lines will be completely horizontal

the intersection points will represent the lowest amount of charms able to be bought and the largest amount of charms

Answer 3

blank xy axis

Answer 4

the f(x) function looks something like this