Question

Find the range of the function for the domain {-2,0,4}.show your worm.f(x)=5x^2+4

Answer 1

To find the range

substitute -2 , 0 and 4 into the function given

f(-2) = 5(-2)² + 4 = 5(4) + 4 = 20 + 4 = 24

f(0) = 5(0) + 4 = 0 + 4 = 4

f(4) = 5(4)² + 4 = 80 + 4 = 84

The range is;

{24, 4, 84}