A grading machine can grade 48 multiple-choice test in one minute how long will it take the machine to grade 300 test

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Place the following steps in order to complete the square and solve the quadratic equation,

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?