Question

f(x)= -x^2-3x+3Find f(7)

Answer 1

$f(7)=-67$

1) What we see here is to evaluate the function when x=7.

2) So, let's plug x=7 into the function to find the corresponding value in the Range for entry 7 in the Domain Set.

$\begin{gathered} f(x)=-x^2-3x+3 \\ f(7)=-(7)^2-3(7)+3 \\ f(7)=-49-21+3 \\ f(7)=-70+3 \\ f(7)=-67 \end{gathered}$

Thus for coordinate 7, there is a corresponding value of -67