Leah is kayaking 1800 yards down the river. She will drift with the current partway at 30 yd/minute and paddle partway at 90 yd/minute.
a) Write and graph an equation to represent the possible times.
b) What do the x and y intercepts represent?
c) Find the domain and range.
d) If Leah paddles for 10 minutes, how long will she drift for?