Question

Evaluate and match each expression

Answer 1

Explanation:

1. 12+x

when x=4

so,12+4=16

2.3x+y

when x=4 and y=7

so,3(4)+(7)

=12+7=19

3.4y-10

so,4(7)-10

=28-10

=18

4. 1/2xy

when x=4 and y=7

so,1/2×4×7

1/2×28

=14