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IM 8.7.8 Practice: Combining Bases

Select all the true statements:

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

Find , and  if .

Han found a way to compute complicated expressions more easily. Since , he looks for pairings of 2s and 5s that he knows equal 10. For example,    Use Han's technique to compute the following:

The cost of cheese at three stores is a function of the weight of the cheese. The cheese is not prepackaged, so a customer can buy any amount of cheese.

  • Store A sells the cheese for  dollars per pound.
  • Store B sells the same cheese for  dollars per pound and a customer has a coupon for $5 off the total purchase at that store.
  • Store C is an online store, selling the same cheese at  dollar per pound, but with a $10 delivery fee.
This graph shows the price functions for stores A, B, and C. Match Stores A, B, and C with Graphs , and .

How much does each store charge for the cheese per pound?

How many pounds of cheese does the coupon for Store B pay for?

Which store has the lowest price for a half a pound of cheese?

If a customer wants to buy 5 pounds of cheese for a party, which store has the lowest price?

How many pounds would a customer need to order to make Store C a good option?