Which equation represents the same function as y=3x2+12x+7 y
=
3
x
2
+
12
x
+
7
?

For this case we will first look for the total cost of the purse.
 We then have the following rule of three:
 14.95 $ > 100%
 x > 105%
 Clearing x we have:
 x = (105/100) * (14.95)
 x = 15.6975 $
 The amount needed to buy the purse is:
 15.6975 - 10 = 5.6975 $
 
 holley needs 5.6975 $ to buy the purse