Luis rides his bicycle 3/4 mile in 5 minutes, or 1/12 hour, along the bike trail. Assuming he rides at a constant rate, what is his speed, in miles per hour?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?