Question 330869
Magazine sales. Henry sold 120 magazine subscriptions in
x days.
a) Write a rational expression for the rate at which he sold
the subscriptions.
b) Suppose that he continues to sell at the same rate for
5 more days. Write a rational expression for the number
of magazines sold in those 5 days.

he sold 120/x magazine subscriptions   per day
..
he sells 120/x per day
so for 5 days he will sell 120/x *5  = 600/x in 5 days
..