Algebraic Equations - Test Review

Mathematical Equivalence

ON

• 125
• 0.056
• is not
• incorrect
• 0.125
• is
• correct
• 56
• 0.875
• 1.25

Athena's younger sister, Stephanie, works part-time at a store where she earns $23.75 each hour. What is an expression that could be used to find the amount Stephanie earns any number of hours, b?

Mathematical Equivalence

ON

Chelsea and Alyssa are walking on the Shannon Ranch track. Chelsea walks 1.4 miles less than Alyssa.

Write an equation for the number of miles Alyssa walks, a, is Chelsea walks 3.7 miles.

Mathematical Equivalence

ON

Chelsea and Alyssa are walking on the Shannon Ranch track. Chelsea walks 1.4 miles less than Alyssa.

Write an equation for the number of miles Chelsea walks, c, is Alyssa walks 2.6 miles.

Mathematical Equivalence

ON

Using your knowledge of variables, determine whether each situation can have only one value for the variable or more than one value for the variable. Select ALL the situations that have a variable with more than one value.

• The total cost to buy m movie passes for $10.50 each.

• The number of cups, c, of milk in 1 gallon.

• The number of pizzas to order, p, if eats student eats 3 slices.

• The greatest number of $5 coffees, c, Mr. H can buy with $40.

• The volume, v, of a bedroom with a length of 12 feet, a width of 11 feet, and a height of 9 feet.

Jenn spends a total of $240 on 30 boxes of EXPO markers. Each box costs the same amount of money. What is an equation that could be used to express this situation?

Groups:

(a) True

,

(b) False

• Mr. H can subtract 27.50 from both sides of the equation to determine the value of c.

• Mr. H can divide 100 by 27.50 to determine the value of c.

• Mr. H can determine that 27.50 + 2.50 = 30 and 100 - 30 = 70, so the value of c must be $70.

• Mr. H can determine the value of c as the difference of 100 and 27.50.

Levi earns $11.40 for every hour he cleans a neighbors' pool. The table on the left shows the total amount Levi charges three different customers for cleaning their pools.

Which equations could be used to solve for h, the number of hours it takes Levi to clean each pool.

(Select ALL that apply.)