Luke buys a certain brand of cereal that costs $11 per box. Luke changes to a super-saving brand of the same size. The equation shows the price, y, as a function of the number of boxes, x, for the new brand.

y = 9x

Part A: How many more dollars is the price of a box of Luke's original brand of cereal than the price of a box of the super-saving brand? Show your work.

Part B: How much money does Luke save each month with the change in cereal brand if he buys 6 cereal boxes each month? Show your work.

Question

Mathematics

Spence

29 August, 07:36

Luke buys a certain brand of cereal that costs $11 per box. Luke changes to a super-saving brand of the same size. The equation shows the price, y, as a function of the number of boxes, x, for the new brand.

y = 9x

Part A: How many more dollars is the price of a box of Luke's original brand of cereal than the price of a box of the super-saving brand? Show your work.

Part B: How much money does Luke save each month with the change in cereal brand if he buys 6 cereal boxes each month? Show your work.

+4

Answers (1)

Know the Answer?

Jazlynn Dominguez · Answer 1

Y = 11x is the function for the original boxes that he bought ... it was $11 per box.

y = 9x is the function for the super saving brand ... it is $9 per box

so there is a $2 difference between the original and the super saver.

original box ... 6 cereals

y = 11 (6)

y = 66

super saver ... 6 cereals

y = 9 (6)

y = 54

66 - 54 = 12 ... so Luke saves $12 per month by buying the super saver brand