To fond the price before the increase divide the new price by 1 plus the percent of increase:
720 / 1.03 = 699.029
Rounded to the nearest penny = 699.03
3(x-1)=2x+5
3x-3=2x+5
3x-2x=3+5
x=8
Decimal form - 8.24
mixed number form - 8 1/4
2/12 or 1/6. You have to divide 2/3 by 4 to get what w equals to.