Amodel for the length of daylight (in hours) in philadelphia on the tth day of the year is l(t) = 12 + 2.8 sin 2π 365 (t − 80) . use this model to compare how the number of hours of daylight is increasing in philadelphia on march 21 and april 21. (assume there are 365 days in a year. round your answers to four decimal places.)

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row