Of the 1800 students at riverside middle school,35% of them are in sixth grade. How many sixth graders are there

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

Sections of prefabricated wood are each 5 1/3 feet long. how long are 7 1/2 sections placed end to end?