Answer:
5 hours
Step-by-step explanation:
75 + 55x = 350
75 - 75 + 55x = 350 - 75
55x = 275

x = 5
It would be 5%. I know the answer is right I just don’t know how to explain it. Sry. But I hope this helps.
Slope is 1/2. The equation to solve it is y2-y1 / x2-x1. I hope you understand it now :)