A deep sea exploring ship is pulling up a diver at the rate of 25 feet per minute. the diver is 200 feet below sea level. how deep was that diver 10 minutes ago?

Is a positive integer raised to a negative power always positive

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.