Week 1

Solve 4n - 2n = 4.

• 2

• 4

• 6

• 8

Solve 2 + 5x + 2x = -12.

For which equation would you add 12 as the first step?

Which of the following equations does not have x = 2 as a solution?

Solve 3 = x + 3 - 5x.

• x = -6

• x = 0

• x = -1

• x = 6

You solve an equation and find that 7 = 9 in your final step. What does this mean?

• The equation has 1 solution.

• The equation has no solution.

• The equation has infinitely many solutions.

• The equation is an identity.

Write the phrase "the difference of 4 and a number" as a variable expression.

• x - 4

• 4 - x

• x + 4

• 4 + x

Write the following sentence as an equation: 7 less than twice a number is 17.

• 7 - 2x = 17

• 2(x - 7) = 17

• 2x - 7 = 17

• 2(7 - x) = 17

Which equation has a solution of y = -2?

• 3y + 1 = 5

• 2y - 5 = 1

• 4y + 8 = -4

• y - 3 = -5

Solve for y: 
2y + 7 = 11

• y = 2
• y = 1
• y = 9
• y = 4