Question

Please someone help!!! (Open the picture)

Answer 1

Hello, please consider the following.

a) You need to replace x by -1.

$f(-1)=4*1-3*(-1)+5=4+3+5=12$

b) You need to replace x by 2t and simplify.

$f(2t)=4*(2^2t^2)-3*(2t)+5=16t^2-6t+5$

c) You need to replace x by t-2 and develop, and simplify.

$f(t-2)=4(t-2)^2-3(t-2)+5\\\\=4(t^2-4t+4)-3t+6+5\\\\=4t^2-16t+16-3t+11\\\\=4t^2-19t+27$

Thank you.