Question

b) f(x) = −3x2 + 7

c) f(x) = (x + 1)∕(x + 2)

Answer 1

Question is incomplete.

Let us ask for $f(0)$ :

Solution:

(b)

$f(x) = −3x^2 + 7\\ f(0)=-3(0)^2+7=0+7=7$

(c)

$f(x) = (x + 1)∕(x + 2)\\ f(0)=(0+1)/(0+2)=1/2$