Use the model to find the missing number in the pair of equivalent expressions. 15 + 9 = ?(5 + 3)

What number is missing from the expression?

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1