Simplify 3(x - 6) - 4(x 3).
a. -x - 30
b. -x - 9
c. -x - 6
d. -x2 - 30

3(x - 6) - 4(x + 3) = 3x - 18 - 4x - 12 = -x - 30

Your marked down price would be $562.02. I included a picture of how I got that, but I'll try to explain it as well. 0.87 in a percentage is 87% (I know this because in order to get a percentage you multiply 0.87 by 100 and get 87%). Once I did that I set up a ratio where I made 100% and $646.00 equal to each other because that is the original price. And I made 87% equal to nothing or if you want to you can put x there. I then cross multiplied 87 and 646 which gave me 56202, and then divided that number by 100 which gave me my answer of $562.02, which is 87% of your original price.