Carlo buys $14.40 worth of grapefruit. Eat grapefruit cost $0.80. How many grapefruits does Carlo buy? At the same store, Kahri spends 1/3 as much money on grapefruits as Carlo. How many grapefruits does she buy?

Step-by-step explanation:

The number of grapefruit (g) is found by ...

  0.80g = 14.40

  g = 14.40/0.80 = 18

Carlo buys 18 grapefruit.

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Kahri spends 1/3 as much for grapefruit at the same price, so will get 1/3 as many.

  (1/3)(18 grapefruit) = 6 grapefruit

Kahri buys 6 grapefruit.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50