Scientific notation is a good way to write what kinds of numbers? Check all that apply.
A. decimals
B. fractions
C. whole numbers
D. very large numbers
E. very small numbers

Having a hard time understanding this question (see attachment).

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.