The graphs below display a simulation of a team's mascot walking toward the west-end goal on the high school football field. Starting at a point 65 yards (yd) from the goal line and 50 ft from the sideline, she moves toward the goal line and waves at the crowd when she is 35 yd from the goal line. The parameter, t, represents time in seconds.

a. According to the graphs, how much time has elapsed?
b. How far did she travel?
c. What is her average velocity?
d. Explain the meaning of each number in these parametric equations.
x = 65 - 2t
y = 50
e. Using the equations from 5d, simulate the mascot's motion on your calculator screen in an appropriate window.
f. Increase the maximum t-value in your graphing window to determine when the mascot crosses the 10-yard line.
g. Write and solve an equation that will determine when the mascot crosses the 10-yard line.

351950 [O, 100, 10, 0, 60, 10] [0, 100, 10, 0, 60, 10]