What is the ratio of 100 milk cartons taken to the total of milk cartons

Which expression shows the sum of the polynomials with like terms grouped together

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?

The sum of four times a number and three is two times the number minus twenty nine