Tom bought a soft drink for four dollars and seven candy bars. he spent a total of thirty- nine dollars. how much did each candy bar cost

Answer this 30 points and brainliest!

With both problems. a.s.a.p directions on photo ^

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?