HELP Select all the true statements. A). π is the area of circle of radius 1 B). π is the area of the circle of diameter 1 C). π is the circumference of a circle of radius 1 D). π is the circumference of a circle of diameter 1 E). π is the constant of proportionality relating the diameter of a circle to its circumference F). π is the constant of proportionality relating the radius of a circle to its area

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

113.42

i hope that is right.

step-by-step explanation: