Find the value of the function y=3x2−21 when x=4 .(1 point)

Answer 1

To find the value of the function y=3x^2−21 when x=4, we substitute the value of x into the function.

Therefore, y=3(4)^2−21
=3(16)-21
=48-21
=27

So, when x=4, y=27.