Please help! I need to finish these questions as soon as possible. If you can do this one can you answer other questions?

Can someone me do math because i am having a breakdown rn because i don’t get it

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?