The ratio of red to blue to green marbles in a bag is 3 : 10 :4. If there
are 39 red and blue marbles
altogether, how many green marbles
are there?

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is the difference between the equations of a vertical and a horizontal line?

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.