Situation: a 15 gram sample of a substance that's a by-product of fireworks has a k-value of 0.1405. n noe no initial mass (at time 0) n mass at time t k a positive constant that depends on the substance itself and on the units used to measure time t time, in days

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.