What was his average speed from hour 4 to hour 7?
5 mph
7 mph
9.7 mph
21 mph

Find the sum of the following series. round to the nearest hundredth if necessary.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36