Writing Function Rules Word Problems

Front

What is a function rule?

Back

A function rule is a mathematical expression that describes the relationship between two quantities, typically in the form of an equation.

Front

How do you represent a total cost that includes a flat fee and a variable cost?

Back

The total cost (C) can be represented as C = flat fee + (variable cost per unit * number of units).

Front

Write a function rule for a phone plan that charges a flat fee of $20 plus $0.10 per minute for calls.

Back

C = 20 + 0.10m

Front

Write a function rule for renting a bicycle at $10 per hour.

Back

C = 10h

Front

If the initial temperature is 70 degrees Fahrenheit and it increases by 5 degrees every hour, what is the function rule?

Back

T = 70 + 5h

Front

Write a function rule for a car rental company that charges $50 flat fee plus $20 per day.

Back

C = 50 + 20d

Front

If the initial temperature is 25 degrees Celsius and it decreases by 2 degrees every hour, what is the function rule?

Back

T = 25 - 2h

Front

What does the variable 'm' represent in the context of a phone plan?

Back

In the context of a phone plan, 'm' represents the number of minutes used for calls.

Front

What does the variable 'h' represent in the context of renting a bicycle?

Back

In the context of renting a bicycle, 'h' represents the number of hours the bicycle is rented.

Front

What does the variable 'd' represent in the context of renting a car?

Back

In the context of renting a car, 'd' represents the number of days the car is rented.