Circle I is dilated with the origin as the center of dilation to create Circle II. What is the scale factor used in the dilation? If the scale factor is a fraction. A. 2
B. 4
C. 1/2
D. 3/4​

Which expression is equivalent to √ -80?

The parking lot of a store has the shape shown. all angles are right angles. what is the area of the parking lot?

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?