I’m needing helping with the examples 17-11 and 17-12. thank you so much

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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