Evaluate the expression x^2+5x-19 for x=-4

Are the ratios 3:6 and 2:4 equivalent

What substitution should be used to rewrite x8 - 3x4 + 2 = 0 as a quadratic equation? u = x2 u = x4 u = x8 u = x16?

Write an equation in slope intercept form that has a slope of 5 and passes through 4,-20

Is f (x) = - 4x squared - 2x-8, concave up or down

Ann says the figure below is a square. Pablo says that it is a parallelogram. Felix says that it is a rectangle. Can they all be right Explain.

What is the next term of the arithmetic sequence? 8,5,2,-1,-4,?

Identify the pattern and find the next number in the pattern. 0.8, 3.2 12.851.2

Factor completely 2x² - 12 + 10

On a recent day one US dollar was worth 1.09 euros. If you were to exchange 157 euros on that day how many US dollars would you have received? -$111.09 -$144.04 -$155.91 -$171.13

If the volume for 3-D pyramid A is 200 cm3 and the volume for 3-D pyramid B is 800 cm3, how many times bigger is the volume of pyramid B than pyramid A? is it 4 or 0.004