1.2 HW - Multi-Step Equations

x + 4 = 8

• 12

• -12

• 4

• -4

3w+7=19

• 13

• 4

• 5

• -4

12=q+11

• 22

• 23

• -1

• 1

2g-13=3

• 8

• -8

• 7

• -4

 $\frac{h+6}{5}=2$  

• -20

• 4

• -4

• 20

12v+10v+14=80

• -3

• 5

• 3

• -5

 $\frac{a}{3}+4=6$  

• -14

• 6

• 14

• -6

The altitude a of a plane t minutes after liftoff is given by a=3400t + 600. How many minutes after liftoff is the plane at an altitude of 21,000 feet?

• 16 min

• 5 min

• 4 min

• 6 min