The area of circle b is 4 times greater than the area of circle a. if the radius of circle a is 13 meters, what is the radius of circle b?

a. 4 meters
b. 13 meters
c. 26 meters
d. 52 meters

Stephen thublin invests $1,000,000 in a 45-day certificate of deposit with 6.55% interest. what is the total interest income from the investment?

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?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.