What's the slope of a line that passes through (-4,-13) and (19.11)?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Which of the following parabolas opens up?

Mr. roseanne will buy 12 1/2 pounds beef for for a cookout. the price for the first 3 pounds of beef is $4.99 per pound. after that, the price is $4.49 per pound. how much will mr.roshan pay for the beef