Question

I need help, I don't understand this question.

what is f(-3) if f(x)=|2x+1|+5

Answer 1

f(-3) =10

Explanation:

When given a function f(-3), they want you to substitute x=-3 into the function f(x) and solve

f(x) =|2x+1|+5

Let x=-3

f(-3) =|2 *-3+1|+5

f(-3)=|-6+1|+5

f(-3)=|-5|+5

The absolute value of -5 is positive 5 (absolute values means always positive).

f(-3)=5+5

f(-3) =10