Sem 1 Math 7 Exam Review

Front

What is the total cost of attending the county fair if admission is $5 and each ride costs $0.50?

Back

Total cost = Admission + (Cost per ride × Number of rides). For $20, you can go on 30 rides.

Front

How do you set up an equation for the number of students in each bus if 331 students went on a field trip with 6 buses and 7 students in cars?

Back

The equation is 6n + 7 = 331, where n is the number of students in each bus.

Front

If the temperature dropped by 5ºF and the new temperature is 37ºF, how can you model this situation?

Back

The equation is d - 5 = 37, where d is the original temperature.

Front

What is the result of the expression -4 - 16?

Back

The result is -20.

Front

What equation represents the cost of printing books if the printer charges $800 plus $5 per book for a total budget of $4,000?

Back

The equation is 800 + 5x = 4000, where x is the number of books.

Front

What is the formula to calculate the total cost if you know the fixed cost and variable cost per item?

Back

Total cost = Fixed cost + (Variable cost per item × Number of items).

Front

How do you find the number of rides you can take with a given amount of money?

Back

Number of rides = (Total money - Admission cost) / Cost per ride.

Front

What does the variable 'n' represent in the equation 6n + 7 = 331?

Back

The variable 'n' represents the number of students in each bus.

Front

How do you solve the equation d - 5 = 37 for d?

Back

Add 5 to both sides: d = 37 + 5, so d = 42.

Front

What is the process to simplify the expression -4 - 16?

Back

Combine the numbers: -4 - 16 = -20.