Two hard math multiple choice problems, please solve 10 point to best answer.

Using the formula, y = 3(1.1)x, what distance, in miles, will Erica be running in 10 weeks? Round to the nearest mile.
A. 7
B. 8
C. 9
D. 10


Compute the distance Erica will run if she continues using the formula, y = 3(1.1)x, for 52 weeks (one year). Does this distance seem reasonable?
A. yes
B. no

1).
Using the formula, y = 3(1.1)^x, what distance, in miles,
will Erica be running in 10 weeks?
Round to the nearest mile.
B. 8

2).
Compute the distance Erica will run
if she continues using the formula,
y = 3(1.1)^x, for 52 weeks (one year).
Does this distance seem reasonable?
426 miles
A. yes

I'm not a super-genius, but I don't think there's enough information here.

The better question here is what do y and x stand for in those equations...