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Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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