20. Determine the rate of change for the following equation on the given interval.

f (x) = 2x + 7 on the interval - 2 < (underlined) x < (underlined) 3

A) 2

B) - 2

C) 10

D) - 10

Estimate the sum of 21+17.

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5x + 2y = 7 y = x + 1 What is the solution set of the given system?

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Find diameter and radius if c = 43m

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Which one of these is not like the other 25,60,35,20,22