The number of students at marita's school decreased to 75% of last year's number. last year, there were 2,500 students. how many students are there this year? (and everyone who gives an answer)

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point