george is 6.25 feet tall needs to know the height of a tree that he is going to cut down. he notices that he casts a 10 foot tall shadow when the tree casts a 28 foot shadow.

17.5 ft

Step-by-step explanation:

6.25/10 = x/28

x = 28(6.25/10)

x = 17.5 ft

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step-by-step explanation:

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !