Evaluate the given integral by changing to polar coordinates. r (4x − y) da, where r is the region in the first quadrant enclosed by the circle x2 + y2 = 16 and the lines x = 0 and y = x

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42