Marilyn earns $150 per month delivering newspapers plus $7 an hour babysitting. if she wants to earn at least $300 this month, how many hours will she have to babysit?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?