Michelle used a $20 bill to pay for a notebook that only costs p dollars how much change did michelle receive from the cashier? write your answer as an expression.

Which expression is equivalent to? assume x > 0 and y > 0.

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint