Given that R=8x + 4y
Find y when x = 8 and R=30
Give your answer as an improper fraction in its simplest form.

Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn.how many hours was natasha asleep on the beach?

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

Let r = 3. what is the value of r + 58?