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Mathematics 9 Online
OpenStudy (volleyballlover55):

help!

OpenStudy (volleyballlover55):

@kgrendel0324

OpenStudy (volleyballlover55):

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.

OpenStudy (kgrendel0324):

Part A; if y is the price and x is the number of boxes, then the super saving brand is 9 dollars which means it is 2 dollars cheaper because 11-9=2.

OpenStudy (volleyballlover55):

awesome! and part b? :)

OpenStudy (kgrendel0324):

Part B; Super savings box equation is y=9x so six months is y=9*6=54 so super saving cereal cost 54 dollars for 6 months. The original cereal is 11 dollars a box so the equation is y=11x. For 6 months it would be y=11*6=66 so after 6 months he paid 66 dollars for the original cereal. So to find the amount he saved you subtract the 2, 66-54= 12. In total, he saves 12 dollars.

OpenStudy (kgrendel0324):

HOPE THIS HELPS!! :D

OpenStudy (volleyballlover55):

your incredible! your so good at math! thanks so much :)

OpenStudy (kgrendel0324):

Anytime! Thanks:)

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