Find each function value1. f(7) if (x)=5x2. f(4) if f(x)=3x-1

ANSWER

EXPLANATION

To find the value of a function, f(x) at a given value x=a, we plug in x=a into f(x) to obtain f(a) in simplified form.

The first function is

To find f(7), we substitute x=7, into the function.

The second function is

To find f(4), we replace x with 4 to obtain,

john earns $14.00 for two hours of work.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .