Answer :
When replace x with 2 in the equation, you get -16
First thing you would do is rewrite the equation substituting x for 2. After that, you would multiply 42 by 2, which would give you 84. From then on, you would subtract 100 from 84, which means the answer would equal -16, therefore f(2) = 42(2)-100= -16
f(2)=42(2)-100
f(2)=84-100
f(2)=-16
Hope this helps! Have a great day! :)