Find the value of the function y=3x2−21

when x=4
.(1 point)
y=

When x = 4, the value of the function y = 3x^2 - 21 can be found by plugging in the value of x into the function:

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