An average level of HDL, a type of good cholesterol, for a person is usually no more than 60 , and an unhealthy level is lower than 40. A doctor sees 4 patients and tests their HDL levels. The first 3 levels are 45, 52, and 60. What can the fourth patient's HDL level be if the average of all four patients' levels fall in the average, but not unhealthy, range of levels?

The area of a right triangle is $x^2+2 x$. The base, b, equals x + 2. What is the length of the height, h?

Factor.

Yvonne learns that a refrigerator should be kept at a temperature of no more than 40 degrees Fahrenheit but warmer than 32 degrees Fahrenheit.

Yvonne tests the temperatures of some refrigerators at an appliance store. The first 4 temperatures are $35^{\circ}, 40^{\circ}, 20^{\circ}$, and $45^{\circ}$. What should the last temperature be if the average of the temperatures is within the proper temperature range?

The area of a right triangle is $x^2+2 x$. The base, b, equals x + 2. What is the length of the height, h?

Set the area equal to the product of the base and the height.

Yvonne learns that a refrigerator should be kept at a temperature of no more than 40 degrees Fahrenheit but warmer than 32 degrees Fahrenheit.

Write an expression to show the possible range of proper refrigerator temperatures.

The area of a right triangle is $x^2+2 x$. The base, b, equals x + 2. What is the length of the height, h?

Write the formula for the area of a triangle given the base and height.

What is the solution to 32 < 7x + 11 < 39?

A 21 > x > 28

B 3 < x > 4

C 3 < x < 4

D 3 > x > 4

Simplify $\frac{6}{9 q^2}-\frac{3 q}{9 q^2}$.

A $\frac{1}{3 q}$

B $\frac{2}{3 q}$

C $\frac{2-q}{3 q^2}$

D $\frac{3(2-q)}{q^2}$

What is the method for multiplying and dividing exponents when working with rational expressions?

What is the first step in solving the inequality 2(x + 5) > x + 12?

A Combine the variables.

B Use the Addition Property of Inequality.

C Apply the Distributive Property.

D Use the Multiplication Property of Inequality.

One leg of a right triangle is twice the length of the other leg. The length of the hypotenuse is square root of 45 centimeters. Let x represent the length of the shorter leg. Use the Pythagorean Theorem to write and solve an equation to find the length of the legs.

Are there four terms in the polynomial? If you have four terms with no GCF, try to group the terms into smaller polynomials. Then factor each group by its GCF.

For example, factor $x^3+7 x^2+2 x+14$.

Factor out the common term.

Which function does the table of values represent?

A $y=x+8$

B $y=-x^2+12$

C $y=x^2+2$

D $y=-x^2-3 x+4$

To find the distance between (5,3) and (-2,9), Dan lets $\left(x_1, y_1\right)=(5,3)$ in the distance formula. Dawn lets $\left(x_1, y_1\right)=(-2,9)$. Explain why Dan and Dawn will get the same result.