Change both 4 to 2^2 and 8 to 2^3
you now have 2^2(4x-5)=2^3(3x-4)
2(4x-5)=3(3x-4)
8x-10=9x-12
x=2
The discount = 40 - 34 = 6
The percentage of the discount = 6 / 40 * 100 = 15 %
1. b
3. c
5. a
7. b
sorry that I can't get 2, 4, 6 and 8 I haven't done this type of math in a while
