Answer:
2.9 seconds
Step-by-step explanation:
slope = (y2-y1)/(x2-x1)
(2,4) (4,8)
m= (8-4)/(4-2)
m = 4/2
m=2
Answer: 2
Answer: 45
The sides are 2x,3x,4x
Add them up and you have 9x=45
Answer:Alex earned $12
John earned $36
j=3a
a+3a=48
4a=48
a=48/4
a=12
j=36