Which term best describes the set of all points in a plane for which the sum of the distances to two fixed points equals a certain constant?
A. Ellipse
B. Parabola
C. Circle
D. Hyperbola

The mathematical expression 9€ t means

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?