The rectangular room is 10.25 inches by 8 inches. if 1 inch represents 2 feet of the actual room, what is the scale factor and actual area of the room?

When the ball has traveled a distance of

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?