The graph of the function f(x) = (x - 3)(x + 1) is shown.
Which describes all of the values for which the graph is
positive and decreasing?
A. all real values of x where x < -1
B. all real values of x where x < 1
C. all real values of x where 1 D. all real values of x where x>3

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Explain why the factor 1.5 is broke. into two numbers in the model.