Question

If f(x) = x + 4, find f(-7).

3

11

-3

-11

Answer 1

-3

Just plug in -7 for x and solve and you get -3

Answer 2

for future reference

if f(x)= x+4

if we're solving for f(0)
then f(0) = 0+4

if we're solving for f(5)
then f(5) = 5+4

if we're solving for f(-10)
then f(-10)= -10 +4

see the pattern?