Question

The French club is holding a car wash fundraiser. They are going to charge $20 per car, and expect between 30 and 100 cars. Identify the independent and dependent quantity in the situation, and find reasonable domain and range values.

A: number of cars; money raised; 30 to 100 cars; $600 to $2000
B: money raised; number of cars; 30 to 100 cars; $600 to $2000
C: number of cars; money raised; $600 to $2000; 30 to 100 cars
D: money raised; number of cars; $600 to $2000; 30 to 100 cars

Answer 1

A is the correct answer.

Answer 2

An independent variable is a variable that represents a quantity that is being controlled  in an experiment.

A dependent variable represents a quantity whose value depends on how the independent variable is controlled.

In the given question number of cars represents the independent variable while money raised represents independent variable .Domain is the set of values the independent variable can take .The number of cars 30 to 100 represents the Domain.The range is corresponding y values .The charge per car is $20.

Range = 30x20=600 to 100x20=2000.

Option A: number of cars; money raised; 30 to 100 cars; $600 to $2000 is the right option.