Wilton drives an Uber. He charges $20 per hour. One passenger gave Wilton an additional tip of $10, which made the total he paid $90. How many hours did Wilton drive the passenger? Solve for the unknown quantity. (2 pts – 1 pt for correct answer, 1 pt for showing your work)

4 hours

Step-by-step explanation:

He charges 20 bucks per hour, and a passenger gave him a ten dollar tip.

1. Remove the 10 dollar tip (Or it will throw you off, trust me)

2. Divide 80, Number with no tip, by the amount charged per hour, 20.

3. You get 4, so you know it is 4 hours

answer: a.   one is a factor of every whole number since every number is divisible by itself.

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons