All you have to do here is multiply 30 by the number of people
so..

B. 12 assuming that it is a right triangle :)
I don't know how to solve 11 but I guess I can solve 12 so I think those are the answers:
12.
(4, 53)
(5, 85)
Answer:
Justin jogs 8 miles every day.
Step-by-step explanation:
3 2/5 = 3 4/10
3 4/10 + 4 6/10 = 8