Ethan installs tiles on the floor of a room with a length of 14 feet and a width of 12 feet. it takes 9 hours to install the tiles in the room.
what is the average speed at which ethan can install the tiles? round to the nearest tenth.

Find total area
area=14 ties 12=168 ft^2
9 hours

168/9=56/3=18.6666666 ft^2 per hour

round
18.7 ft^2 per hour

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.