12x+7<-11 AND 5x-8 greater then or equal to 40

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

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

Abook store is having a 30 perscent off sale. diary of the wimpy kid books are now 6.30 dollars each what was the original price of the books