At a new car dealership a particular model comes in 4 trim levels,5 different colors, and 3 different interiors. How many different version of this car model can be created from these options?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)