Avending company makes 50 cents on every item sold from a vending machine. each item in the machine costs the company 20 cents an item plus a space rental fee of $50.
if x represents items sold, which of the items are true.
select all that apply.
[from a-h]

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

Hi, can anyone show me how to do this problem? 100 points for this. in advance