My friend and her family had dinner at a restaurant. the total bill was $74. they want to leave a 15% tip for the wait staff. how much should she pay total?

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.