Question

Dada la funcion: f(×)=2ײ-5; determine la imagen cuando f(3).

Answer 1

f(x) = 2x² - 5
f(3) = 2(3)² -5
f(3) = 2 *9 -5
f(3) = 18 -5
f(3) = 13

f(3) = 13