An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. assume the plane continues at the same rate of descent. write an equation to represent the height of the airplane in feet above the ground f(x) in relationship to time in minutes x

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck