An oil change costs $39. Jessica has a coupon for 10% off before sales tax is calculated at 7%. Which expression can Jessica use to calculate her total cost?
1) 39 - (0.10 * 39) + (0.07 * (39 - (0.10 * 39)))
2) 39 - (0.10 * 39) - (0.07 * (39 - (0.10 * 39)))
3) 39 + (0.10 * 39) + (0.07 * (39 + (0.10 * 39)))
4) 39 + (0.10 * 39) - (0.07 * (39 + (0.10 * 39)))