A car rental company charges a flat fee of $45 to rent a car. In addition to that you must pay a fee per day you rent it. If you keep the car for 3 days or less, it costs $7 per day. If you keep the car longer than 3
daysit only costs $5 per day.
Write a piecewise equation that represents the situation.

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

52 cm radius = diameter = area = circumference = circumfer

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?