Write the standard equation for the circle with center (–2, 5) that passes through (1, 9).

a. (x – 2)2 + (y + 5)2 = 5
b. (x + 2)2 + (y – 5)2 = 5
c. (x – 2)2 + (y + 5)2 = 25
d. (x + 2)2 + (y – 5)2 = 25

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)