I’ve broken it down into the parts that you’ve highlighted:
Part A: x = 25 + y x + y = 95
Part B: I’m using the substitution method to find the amount of time that Eric plays volleyball, so: x + y = 95 x = 95 - y 95 - y = 25 + y 70 = 2y y = 35, 35 minutes spent playing volleyball
Part C: i don’t completely understand the question, perhaps there was a typo?
