Amodel is made of a car. the car is 7 feet long, and the model is 16 inches long. what is the ratio of the length of the car to the length of the model?

4: 21
7: 16
16: 7
21: 4

Carla is saving money for a trip this summer. she already has some money in her savings account and will add the same amount to her account each week. at the end of 2? weeks, carla has? $130. at the end of 8? weeks, she has? $280. write a linear function in the form y=mx+b to represent the amount of money m that carla has saved after w weeks.