A tour director is hiring boats to transport a group of tourists across a river. He must make sure there is room for at least 45 passengers, the number of tourists in the group. A dinghy
can seat 4 passengers and a flatboat can seat 1 passenger.
Select the inequality in standard form that describes this situation. Use the given numbers
and the following variables.
x = the number of dinghies
y = the number of flatboats