Find the value of the function y=3x2−21 when x=4. Find the solution for y
To find the value of the function when x=4, we substitute x=4 into the equation:
y = 3x^2 - 21
y = 3(4)^2 - 21
y = 3(16) - 21
y = 48 - 21
y = 27
Therefore, when x = 4, the value of the function is y = 27.