Shashi Rimoko earns $620 per week as a chef. He has group medical and dental insurance. Medical coverage costs $9,560
a year and dental coverage costs $172 a year. The restaurant
80% of the medical and 65% of the dental insurance. How
much is deducted each week for insurance coverage?

Plz help would appreciate it

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Can someone answer this question? : )

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers. a) one of the 400 passengers is selected uniformly at random. let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem