Linear Equations Study Guide #2

Which os the following expressions has a simplified value of 3k-2

• -10 - 5k + 12 + 8k

• -8 + 3k + 10- k

• -k + 4 + 5k - k - 6

• -6k + 9k + 4 -2

Simplify the following expressions -1/3 (9h - 18) + 8h

• 11h +6

• 5h - 6

• 11h -6

• 5h + 6

Simplify the expression -7 + 0.3 (-4j + 20) + 8.8j

• 10j + 1

• 7.6j - 1

• 10j -1

• 7.6j + 13

The perimeter of a rectangle is 42 centimeters. Find the value of r.

• r = 4 centimeters

• 12r - 6

• 12r - 6 = 42

• r = 42 centimeters

If the area of the rectangle shown is 88 square inches, which equation could be used to find the value of b?

• 3/4b + 13 = 88

• 6b + 40 = 88

• 8.75b + 5 = 88

• 17.5b + 40 = 88

Solve the equation. 3(-2g+4) = -6g - 12 Does it have one solution, no solution or infinitely many solutions?

• no solution

• infinitely many solutions

• one solution, g = 0

Zack weigh 135 pounds and is gaining .5 pound each week. Skyler weigh 143 pounds and is losing .25 pound a week. Which of the following equations could be used to determine w, the number of weeks that it will take unitl the two boys weigh the same amount?

• 135 + .5w = 143 + .25w

• 135w + .5 = 143w +.25

• 135 + .5w = 143 - .25w

• 135 - .5w = 143 + .25w

When solving an equation, Icis gets to the last line of her work and is left with "12 = -12". What does this mean?

• The solution is 12 or -12

• There is one solution

• There is no solution

• There is infinite solutions

When solving an equation, Icis gets to the last line of her work and is left with "2 = 2". What does this mean?

• The solution is 12 or -12

• There is one solution

• There is no solution

• There are infinite solutions

When solving an equation, Icis gets to the last line of her work and is left with "x = 3". What does this mean?

• All real numbers

• There is one solution and it is 3

• There is no solution

• There are infinite solutions