Answer:
..
Step-by-step explanation:
I think is 90% but im not sure
Given that initial time for jogging is,

After each week the time is increased by

This gives an arithmetic sequence.
To find n such that,

Therefore,

So,

Therefore, 9 weeks before you are up to jogging 70 minutes.
Answer:
A
Step-by-step explanation:
it is a because you have to times all the lingths together and divide it by 3 to get the volume of a pyramid.