Quarterly Exam #2 Interactive Review

Front

What is the total cost of purchasing 13 coffee mugs at $8.50 each?

Back

Total cost = 13 mugs * $8.50/mug = $110.50.

Front

If a manager spends $132.50 on coffee mugs and keychains, how much is left after buying 13 coffee mugs?

Back

Amount spent on 13 mugs = $110.50. Remaining amount = $132.50 - $110.50 = $22.00.

Front

How many keychains can be purchased with $22.00 if each keychain costs $2.75?

Back

Number of keychains = $22.00 / $2.75 = 8 keychains.

Front

Define a linear equation in the context of this problem.

Back

A linear equation is an equation that represents a straight line when graphed. In this case, it can represent the relationship between the number of coffee mugs and keychains purchased.

Front

What is the formula to calculate the total cost of items purchased?

Back

Total Cost = (Number of Coffee Mugs * Cost per Mug) + (Number of Keychains * Cost per Keychain).

Front

If the total number of items purchased is 21, what equation can represent this situation?

Back

Let x be the number of coffee mugs and y be the number of keychains. The equation is x + y = 21.

Front

What is the cost of one coffee mug?

Back

The cost of one coffee mug is $8.50.

Front

What is the cost of one keychain?

Back

The cost of one keychain is $2.75.

Front

How do you set up a system of equations for this problem?

Back

You can set up the equations: 1) x + y = 21 (total items) and 2) 8.50x + 2.75y = 132.50 (total cost).

Front

What does the variable 'x' represent in this problem?

Back

In this problem, 'x' represents the number of coffee mugs purchased.