A gym’s membership in 2010 was 8,700. Now, it is 6,400. Which expression equals the percent of change?

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2