Answer:
Neither; see below
Step-by-step explanation:
Your acceleration: 
Your friend's acceleration: 
Therefore, since both you and your friend accelerate at the same rate, neither is faster.
Answer: 6a 2(a+2a) and the last one
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Since x varies directly as y, the ratio of x to y remains the same. Let the value of x when y=4 be a. Then we have

We can cross multiply to get that

Answer:
the answer is D. she loses 75
Step-by-step explanation:
Answer:
2111.15
Step-by-step explanation:
A=2π*r*h+2π*r^2
You plug in your height and radius into the formula for surface area of cylinder