I need a little help

Which expression is equivalent to 3^3 + 2^2?

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

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