Question

Example 2:

If f(x) = 2x+5, find each value. Show all work.

a) f(-2)

b) f(1)+5

c) f(x+3)

Answer 1

Answer: a. 1

b. 12

c. 2x+11

Explanation:

f(x) = 2x+5

a. f(-2)=

2(-2)+5=

-4+5=1

b. f(1)+5=

2(1)+5+5=

2+5+5=12

c. f(x+3)=

2(x+3)+5=

2x+6+5=2x+11