David gets on the elevator at the 11th floor of a building and rides up at the rate of 57 floors per minute. At the same time, Albert gets on an elevator at the 51st floor of the same building and rid 30 28 37 19 TRUE ANSWER : ? YOUR ANSWER : ?
If [ p] means the greatest integer less than or equal to p, then [-1/4] + [4*1/4] + [3] is equql to : 6 4 7 5 TRUE ANSWER : ? YOUR ANSWER : ?