Question

The Park Hill Middle School Band is holding a car wash to raise money for new uniforms. The band charges $20 for each vehicle washed. The function P(v) represents the amount of money raised, in dollars, from washing v vehicles.
What is the domain of P(v)?

Answer 1

v must be a nonnegative whole number (you can't wash a negative or fractional car).
Domain: {0, 1, 2, 3, ...} or v ∈ Z, v ≥ 0.