Question

3. What is the value of y in the equation y = x2 + 2x, if x = 3?
b. 10
C. 15
d. 16
a 5​

Answer 1

Resposta:

Hi !

Let x = 3.

So y = f(x) and than:

f(x) = x² + 2x

f(3) = 3² + 2(3)

f (3) = 9 + 6

f (3) = 15