First, the mark down 15% would make the value 85% of the original, so doing 15.99*0.85 gives you 13.59. Then take that and multiply that by 0.5, because of the half price, to get a final price of $6.79
She made 10.
25% of 40 is 10.
3/8 + 1/5 = 15/40 + 8/40 = 23/40...that means the other animals make up 17/40.
17/40 (40) = 680/40 = 17...she has 17 other animals
The expansion of the expression 3x - 4(2x - 5) is as follows:
3x -8x + 20 = 20 - 5x.
Therefore the statement is true.
