Evaluate (2f)(5) for f(x) = x 2 + 1

Question

I need help! I don't know how to answer this question and this answer is due today

Answer 1

############### me need help, me dont understand the stuf yu rite ??????

"(2f)(5)"
???? du that meen 2*f, then EVALUATE f at x=5 ?????????

....y=x2+1....me assume this spozed tu be y=x^2 +1

so 2y=2*x^2 +2

then set x=5, yu get 2*5^2 +2

=52

Answer 2

me assume yu meen...f=x^2+1

so 2f=2*(x^2+1)

f(5)...evaluate at x=5

5^2=25

5^2+1=26

2*26=52