You are making an umbrella that is shaped like a regular octagonal pyramid. each base length is 4ft and each side length is 5 ft.
a. estimate the amount of fabric you need to make the umbrella.
b. the fabric comes in rolls that are 72 inches wide. you don't want to cut the fabric "on the bias." find out what this means.
c. how much fabric is wasted?

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:

i pretty sure it is