Hector and Linh are working individually on a problem involving the function f(x) = x^2 - 5.
On a domain where f is invertible, Hector says that f^-1(4) = 3, and Linh says that
f^-1 (4) = -3
Is Hector correct? Is Linh correct? Justify your answer

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