Fran's mower rental charges a flat rate of $12.00 per day for mower rental plus $2.00 per hour the mower is being used. if the number of hours is represented by "h", which algebraic expression represents the overall rate for "h" hours of mower rental?

12h

12 + h

14h

12 + 2h

The correct answer for this would be the last option. 12 + 2h.
Based on the problem above, it is already given that $12 is already a fixed rate because it is the charge per day. The charge that is going to change is the hourly rate which is 2 dollars per hour. So depending on how many hours, the total rate would change. Hope this answer helps.