What is 85.87 rounded to the nearest whole number?

a. 85

b. 85.8

c. 85.9

d. 86

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Which graph represents the following piecewise defined function?

Factor this polynomial completely x^2-64