can someone help with question b? :)

Answer:
Okiieee sooo youur answer is x=13.
Do you want an explanation?
Answer:
x = 13
Step-by-step explanation:
Substitute for y
y = 5x - 15
50 = 5x - 15
65 = 5x
x = 13
I hope this helped and please mark me as brainliest!