If log 5 = 0.699 and log 3 = 0.477, find log 45 without using
the log key.

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.

41/2 - 1 1/3 what is the answer as a fraction?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)