PLZ HELP! THIS IS MY LAST QUESTION! QUESTION IS BELOW!

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2