Question

Sadie is ordering a taxi from an online taxi service. She has to pay a flat charge just to order the taxi, and then has to pay per mile, depending on how far she travels. She wrote an equation to represent her total cost, y, equals, 1, point, 9, x, plus, 3y=1.9x+3, where yy represents the total cost in dollars and cents, and xx represents the number of miles she travels. What could the number 1.9 represent in the equation?

Multiple Choice Answers
The initial charge for using the taxi.
How far Sadie can ride for $1.
How much the taxi costs per mile.
The total charge for 1 mile.