Fifteen more than twice the hours carla worked last week is the same as three times the hours she worked this week decreased by 15. she worked the same number of hours each week. how many hours did she work each week?

15 hours

24 hours

30 hours

10 hours

The answer is 30 hours. You can solve this by a system of equations. 15+ 2h=X with h being the number of hours she worked and X being the total number of hours she worked last week. The second equation would be 3h-15=X since she worked the same amount of hours this week and last week, you can set the equations equal to each other and solve for H which gives you 30 hours. 

The answer is 9

From the function if the input is 9 the output is 4 so the inverse reverses the order so the input now will be 4 and the output will be 9.