The 9 officers of the student council are going on a trip to an amusement park. each student must pay an entrance fee plus $5 for meals. the total cost of the trip is $255. solve the equation 9(e+5)=255 to find the cost e of the entrance fee for each studen.

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?