1. 3x-3 / 3x+18
x-1 / 3x+18
x-1 / x+6
x+6 / x-1
3(x+1 / x-6)
2. 2x^4 / x^4 - 3x^5
3. x^2+4x-12 / x^2+x-30
4. The rate of discount, R, can be determined using the formula R = 1- P-D / P where P is the regular price of an item and D is the discount, or amount saved off the regular price...