When measuring the level of water in a river, +3 means a rise of 3 feet in the level of the water, and –3 means a drop of 3 feet in the level of water. A. Use a complete sentence to describe what 2(–3) means in the context of this problem.

B. Calculate 2(–3) and write a sentence describing what the answer means in the context of this problem

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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

answer:

f(5/2) = 10/3

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