Question

If f(x) = 5x + 40, what is f(x) when x = –5? –

Answer 1

f (x) =5x + 40

so, f (-5) = 5 (-5) +40

= 40 - 25

= 15

Answer 2

hey mate here is ur answer

5(-5)+40

-25+40

15

f(x) is 15

hope this helps

any doubts could be clarified in comments