1. Using the circle below answer the following questions. a What is the radius of the circle?
What is the area of the circle

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.