Which function is a quadratic function?

O ux) = -X+3x2-8

V) = 2x?+8x3 + 9x

O y) = x+3x5+4

O z (x) = 7x2+2-3

Sally can paint a room in 5 hours while it takes Steve 3 hours. How long would it take them to paint if they worked together

What is the mean of the data set? 66, 71, 75, 83, 88, 89, 90, 91 Express your answer to three decimal places. Enter your answer in the box.

Rond to the nearest tenth, for what height will both Claire and Richard same amount for a painting? Explain how to find the answer.

there are two numbers which add up to be 29. If one number is one more than the other find the two numbers

The perimeter of a triangle is 28 feet. One side of the triangle is 5 feet longer than the second side. The third side is 8 feet longer than the second side. Find the length of each side.

A _ ratio that compares two quantities with different kinds of units

Which expressions is equivalent to j (j) (j) (j) (j) (j) (j) (j) (j) (j) (j) (j) (j)

If Julie needs 3 and 1/4 cups of oatmeal how many 1/4 cups of oatmeal will she use

Write an algebraic Expression for three more cookies than are in the jar

Is x=-7 an equation that describes a function