Modeling with Functions
A company uses two different-sized trucks to deliver sand. The first truck can transport (x) cubic yards, and the second (y) cubic yards. The first truck makes (S) trips to a job site, while the second makes (T) trips. What quantities do the following expressions represent in terms of the problem's context?
a. S+T
That's the total number of trips to a job site.
b. x+y
That's the total capacity of the two types of trucks.
c. xS+yT
That's the total cubic yards of sand delivered.
d. (xS+yT)/(S+T)
That is the average rate of sand delivery measured in cubic yards per trip.
Edwin
