There are 126 animals on the farm. If each animal eats 7 packages of food each week, how many
packages of food should the farmer buy each week?*

Can someone me with this problem . show your work .

Solve 2x+y=3 x+y=5 in substitution method

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