7.EE.A.2

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

How do you write an expression for the total cost of staying at a hotel for n nights at $80 per night with a one-time fee of $20?

Back

The expression is 80n + 20.

Front

What is the expression for the total cost of buying j jerseys at $15 each and p pants at $25 each?

Back

The expression is 15j + 25p.

Front

How do you represent the cost of a pizza that costs $8.25 plus $0.75 for each topping t?

Back

The expression is 8.25 + 0.75t.

Front

What does the expression M - 0.03M represent in terms of population decrease?

Back

It represents the population of Moore Haven after a 3% decrease.

Front

How do you calculate the cost Chester paid for a shirt originally priced at s dollars with a 7% discount?

Back

The expression is 0.93s.

Front

What is the formula to find the total cost of an item after applying a percentage discount?

Back

The formula is original price * (1 - discount rate).

Front

What does the variable 'n' typically represent in expressions related to costs?

Back

The variable 'n' usually represents the number of items or nights.

Front

What is the significance of the one-time fee in the hotel cost expression?

Back

It adds a fixed cost to the total that does not depend on the number of nights.

Front

How can you express a 3% decrease in a quantity M?

Back

You can express it as 0.97M.