Algebric fractions x-2/3+ x+1/4=??

The circumference of a circle is 5 pi cm. what is the area of the circle?

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.