How many tiles that are 12 inches by 18 inches will be needed to tile a floor that is 15 feet wide and 20 feet long?

The amount of energy it takes to lift a box might be a function of which of the following

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.