If the shop takes 15 percent off of $15 I would take 15 x .85 to get this 15 percent off giving Mindy $12.75 to spend. With a $12 pizza having 5 percent tax you take 12 x 1.05 too get a total of $12.06 as her total. This means in an even trade Mindy would lose 15 cents to the Pizza Shop
21) Since all angles = 180,
180=66 + 79 + (43 + x)
Subtract (66 + 79) from both sides, you’d get
35= 43 + x
subtract 43 from both sides and x = -8
23.455 = 890 * (2x - 1) + 925x
23.455 = 1780x - 890 + 925x
23.455 = 2705x - 890
24.345 = 2705x
x = 9
The greatest common factor of 3 and 15 is 15.
