Kelly made 4 dresses with 7 yards of fabric. how many jars did you use for one dress

Average acceleration: i have no idea how to do this.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Measure of angles 31 (x+4) (3x+9) me