I think you would divide 91 by 35% which is 260 students.
Try answer C or B because either one could be the right answer
4 hours = 50$
6 hours = 75$
10 hours = 125$
50 + 75 + 125 = 250?
I'm not sure if I understood your question, because you didn't say like "What is all of these times together?"
The function that grows at the fastest rate is C) h(x)=7^x