Describe three scenarios that involve a real-world linear or exponential function. At least one must be exponential. Do not identify yet whether your scenarios are linear or exponential

Ill mark the brainliest if you me with the these three questions 7,8,9

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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?