7th grade fall exam review

Front

What is the formula to calculate the original price after a discount?

Back

Original Price = Sale Price / (1 - Discount Rate)

Front

If a television costs $403.75 after a 5% discount, what is the original price?

Back

$425

Front

What is the formula to calculate the amount of change in price?

Back

Amount of Change = New Price - Old Price

Front

If tickets to Disney World cost $105 and increase to $120, what is the amount of change?

Back

$15 increase

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and never intersect.

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

Given the equation 4x - 5y = 40, how do you find the x-intercept?

Back

Set y = 0 and solve for x. The x-intercept is 10.

Front

Given the equation 4x - 5y = 40, how do you find the y-intercept?

Back

Set x = 0 and solve for y. The y-intercept is -8.

Front

What is the process to simplify an expression like (2)(18) ÷ (-2 + 5)(-1)?

Back

Follow the order of operations: simplify inside parentheses, then multiply and divide.

Front

What is the simplified result of (2)(18) ÷ (-2 + 5)(-1)?

Back

-12