You might need: Calculator

Problem

Sean and Mariana started drinking their slushies at the same time and tried to drink them as fast as they could.
Sean started with 300 milliliters of slushy, and he drank 5, point, 5 milliliters per second.
The graph of the remaining volume of slushy in Mariana's cup (in milliliters) as a function of time (in seconds) is shown below.
Who drank their slushy faster?
Please choose from one of the following options.
Who finished drinking their slushy first?
Please choose from one of the following options.