Answer:
part A : $4
part B : $16
Sue buys a certain brand of cereal that costs = $12 per box.
She changes to a super-saving brand of the same size.
The equation showing price y as a function of the number of boxes, x is for the new brand.
y = 8x
for x = 1, y = 8
So for 1 box super-saver cereal brand costs $8.00
Part A. - So saving per box = 12 - 8 = $4
Part B. - Money saved in 1 box = $4
Therefore, money saved in 4 boxes = 4 × 4 = $16
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