Question

f f(x) = 5x + 40, what is f(x) when x = –5? –9 –8 7 15

Answer 1

Answer:

Step-by-step explanation:

when X= -5

then f(-5)= 5(-5)+40

= -25+40

=15

when x=-9

then f(-9)= 5(-9) +40

= -45 +40

= -5

when x =-8

then

f(-8)= 5(-8) +40

= -40+40

=0

when x=7

then f(7)= 5(7) +40

= 35 +40

= 75

when x=15

then f(15)= 5(15) +40

= 75 +40

= 115