To paint a sunset, you make a shade of orange paint using 5 drops of red paint for every 8 drops of yellow paint. if you use 15 drops of red paint, how many drops of yellow paint would you need?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?