Question

A-18. Evaluate the expressions below for the given values.

a. 4d +3 if d=-1
b. x² + y2 if x = 7 and y = 5

Answer 1

- 1 and 74

Explanation:

a

substitute d = - 1 into the expression

4d + 3

= 4(- 1) + 3

= - 4 + 3

= - 1

b

substitute x = 7 and y = 5 into the expression

x² + y²

= 7² + 5²

= 49 + 25

= 74