Semester 1 Math Review

Front

What is the formula to calculate the total cost when hiring a service that charges a flat fee plus an hourly rate?

Back

Total Cost = Flat Fee + (Hourly Rate × Number of Hours)

Front

If Mike's Music charges $45 per hour, how many hours can you hire them for with $240?

Back

5 ⅓ hours

Front

What does a negative signed number represent in terms of loss or debt?

Back

A negative signed number indicates a loss or debt, such as losing yards in football.

Front

How do you calculate the total loss of yards when a team loses a certain number of yards over multiple plays?

Back

Total Loss = Loss per Play × Number of Plays (e.g., -5 yards × 3 plays = -15 yards)

Front

What is the relationship between the number of people in line and the waiting time at an amusement park?

Back

Waiting time increases as the number of people in line increases.

Front

If the waiting time is 20 minutes for 150 people, how do you find the waiting time for 240 people?

Back

Use a proportion: (20 minutes / 150 people) = (x minutes / 240 people) => x = 32 minutes.

Front

What is the product of three negative numbers?

Back

The product of three negative numbers is negative.

Front

Calculate the product of (-2), (-4), and (-3).

Back

-24

Front

What is sales tax and how is it calculated?

Back

Sales tax is a percentage of the purchase price added to the total cost. Final Price = Purchase Price + (Sales Tax Rate × Purchase Price)

Front

If a T.V. costs $990 and has a 9% sales tax, what is the final price?

Back

$1,079.10