The table below shows the probability distribution of students in a high
school with 1500 students. What is the expected value for the age of a
randomly chosen student?
Age
13
0.01
14
0.25
15
0.28
16
0.30
17
0.15
18
0.01
Probability

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.