Math 7 Midterm Review

Front

What is the formula to calculate average speed?

Back

Average Speed = Total Distance / Total Time

Front

If Lisa cycles 15 3/4 miles in 1/2 hour, what is her average speed in miles per hour?

Back

31.5 miles per hour

Front

What does it mean to factor an expression?

Back

Factoring an expression means to break it down into simpler components that can be multiplied together to get the original expression.

Front

Factor the expression 24x − 56y + 72.

Back

8(3x - 7y + 9)

Front

What is sales tax?

Back

Sales tax is a percentage added to the price of goods and services, collected by the seller.

Front

If an item costs $80.00 and the sales tax rate is 7.25%, how much tax is added?

Back

$5.80

Front

How do you find the original price of an item if you know the tax added?

Back

Original Price = Tax Amount / Tax Rate

Front

If $29.00 in tax is added to the price of an item, what was the original price if the tax rate is 7.25%?

Back

$400.00

Front

What is simple interest?

Back

Simple interest is calculated only on the principal amount, or the original amount of money.

Front

If Emma earned $240 in interest over eight years at a 3% simple interest rate, what was the initial amount she deposited?

Back

$1000