Step-by-step explanation:

Answer:
Y = 50x
Since every minute he jumps 50 times, we multiply 50 by the amount of minutes (x)
Ok, if you say so. Jean took 1/2 hour to complete 3/8 of a math problem.
Isolate x by adding 8 to both sides.
3 = x/3
Then, multiply by 3 on both sides.
9 = x
To prove that this is right, you can imput 9 into the equation and it equals -5.