Trevor earns $7.80 an hour take home pay and works 20 hours each week. trevor wants to buy a new laptop computer to take to college that costs $780. how many weeks will it take for trevor to achieve his goal?
a.
4 weeks
b.
5 weeks
c.
6 weeks
d.
7 weeks

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.