Find the circumference of a pizza with a diameter of 10 inches

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?