Which of the following functions is quadratic?
O A. f(x) = 7x(x+3)
OB fx) = 5/x-1
O c. f(x) = 2^2
O D. f(x)=3(4 – x)

Maryann’s friends loved her bulletin board, and 4 of them asked her to make one for their homes. she offered to make each of her friends a replica of her bulletin board that measures 2 meters by 3 meters. how many kilograms of burlap should maryann collect to complete the bulletin boards for her friends? maryann should collect kg of burlap.