analyze how specific geological processes and features are expressed in Florida and elsewhere. 20 points

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star