Kyle knows that 5 x 3 = 15 how can he use the 5s shortcut to find 8 x 3

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?