Acone has a radius of 2.5 inches and a height of 1.6 inches. what is the volume of the cone? use 3.14 for pi. round to the nearest tenth. 4.0 in³ 10.5 in³ 12.0 in³ 23.1 in³

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

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?