A picture that is 4 inches wide by 6 inches long is enlarged proportionally so that it is 10 feet long. How wide will the picture be in terms of feet

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.