Given the piecewise function (2x - 4 if x < 4 18- xif x > 4 what is the value of f(3) + f(5)? I​

Answer these questions showing your work plz

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2