Quiz 1.1 - Expressions and Equations

Match the vocabulary terms with their definitions.

Match the functions/operations with their inverses.

Evaluate the expression for x = 5.

\frac{x+15}{4}-2x

Enter your answer as a number.

Evaluate the expression for x = 5, y = -2

2xy^{2}-\frac{8(x+y)^{2}}{3}

Enter your answer as a number.

If f(x) = \frac{5-x}{2}, what is f(-11)?

Enter your answer as a number, no spaces.

If f(x) = 2x^{2}-16, what is f(-3)?

Enter your answer as a number, no spaces.

Put the steps in order to evaluate the expression below.

\frac{(2-4)^{3}+66}{2}

1. subtract
2. perform the exponent
3. add
4. divide

Put the steps in order to evaluate the expression below

\frac{1}{3}|4+(\frac{1}{3})^{-1}|-22

1. multiply by 1/3
2. perform the absolute value
3. subtract 22
4. add
5. perform the exponent

Solve the equation.

4x+29 = 5-8(x+6)

Enter your answer as a number, no spaces.

Solve the equation.

\frac{3x-6}{3}=2x+1

Enter your answer as a number, no spaces.

Solve the equation.

\frac{2}{3} = \frac{x}{84}

Enter your answer as a number, no spaces.

Solve the equation. Check for extraneous solutions.

|3-6x|=39

Use x={#, #} format, with exactly one space after the comma. List the smaller number first. If there is only one solution, use x={#} format. If there are no solutions, type "no solution" with no quote marks.

Solve the equation. Check for extraneous solutions.

\frac{|x-3|}{-2}=-7

Use x={#, #} format, with exactly one space after the comma. List the smaller number first. If there is only one solution, use x={#} format. If there are no solutions, type "no solution" with no quote marks.

Solve the equation. Check for extraneous solutions.

|5-x|+9=2x+8

Use x={#, #} format, with exactly one space after the comma. List the smaller number first. If there is only one solution, use x={#} format. If there are no solutions, type "no solution" with no quote marks.

Dr. Demo solved the equation |x+2| = 2x+7 and got x={-5, -3}.

Is his solution correct? Why or why not?