Write an equation that represents the line. Use exact numbers

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

What is the circumference of a circle with an area of 50.24 cm²?

Grading scale 1 has the following weights- (tests- 50% quiz- 25% homework- 15% final exam- 10%). calculate your final average if your performance in the class is as follows-test grades- {88, 84, 90, 75, 70, 81); quiz grades- {88, 67, 90, 90, 45, 99, 76, 98, 100}; homework- 90; final exam- 75