What size is this angle it goes up to 360 I need this asap

Solve x+3y=6 and 4x-6y=6 by elimination . show work !

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

2f(x)= x+3 if 4 < x < 8 2x if x 28 2