Which equation is correct regarding the measure of 21?
© m_1= {(2-0)
• m_1= {(a+o)
O m_1= {(0-0)
m21=
(b + d)

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?