The function $f$ gives the product of a number, $x$, and a number tha…

|Question 19Math

Question

Prompt

The function

f

gives the product of a number,

x

, and a number that is

45

more than

x

. Which equation defines

f

f (x) = x^{2} + x + 45

f (x) = x^{2} + 45

f (x) = x^{2} + 45 x

f (x) = x^{2} + 45 x + 45