Question 57 Answer and Explanation _ACT January 2006 Form 61C Math Section

Question 57 Answer and Explanation _ACT January 2006 Form 61C Math Section

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57. Consider the functions $f\left({x}\right)=\sqrt{x}$ and $g\left({x}\right)=7x+b$ . In the standard (x,y) coordinate plane, $y=f\left({g\left({x}\right)}\right)$ passes through (4,6). What is the value of b ?

A. 8

B. -8

C. -25

D. -26

E. $4-7\sqrt{6}$

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation