In a housing estate the direct proportion of flats to houses is 2: 5. if their are 80 flats, how many houses are there?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?