Evaluate the expression 5x2+2y when x=−3 and y=20.
To evaluate the expression 5x^2 + 2y when x = -3 and y = 20, substitute the given values into the expression:
5(-3)^2 + 2(20)
= 5(9) + 40
= 45 + 40
= 85
Therefore, the expression evaluates to 85 when x = -3 and y = 20.