Caffeine leaves a child's body at a rate of 15 % per hour . A child drinks a beverage containing How long until half the caffiene is gone ?

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

Calculate the total payback for a $3,500 loan at 8% annual interest with monthly payments for two years. show all of your steps. use the formula, m = pm(1 + m)^na/(1 + m)^na - 1, as needed.