Please help me with this ASAP! This is 7th grade math and confuses me. ~The scale drawing of the playground has a length of 6 inches and a width of 4 inches. If the scale is 1 inch equals 3 feet, what is the actual area of the playground?~

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?