Adriver descends from an elevation of 6 feet below sea level to an elevation of 98 feet below see level in 4 equal intervals. what was the driver's change in elevation in each interval?

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip