What is the radius of a circle whose equation is x squared plus y squared minus 10x + 6 y + 18 equals 0

Which of the following tables represents exponential functions?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m