Assess Yourself

y=3x+7 if x=7

28

y=2x+9 if x=-3

3

y=6x-2 if x=3

16

y=-2x+3 if x=4

-5

y=2x+3x+8 if x=5

33

y=5x+9 if x=12

69

y=4x+2x+18 if x=67

420