Question 1, for 3 cups of flour and 1.5 cups of sugar. If you want to make a bigger recipe and you use 21 cups of sugar, how much flour should you use?
question 2 , Baking cookies has a ratio of 4:3 of cups of flour to sugar. If the recipe has 40 cups
how much flour and sugar do you need?
someone please help me out and explain to me how you did it thank you.

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

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Someone me what is the area of this figure? 18m 18m 8m 16m