Sophia College Algebra MM212 Final Milestone

Sophia College Algebra MM212 Final Milestone 20/25 that's 80% 20 questions were answered correctly. 5 questions were answered incorrectly. 1 Geri runs a total of 3.1 miles in a cross-country race. How many feet is this equivalent to? • 5,280 feet • 16,368 feet • 4,989 feet • 15,840 feet RATIONALE In general, we use conversion factors to convert from one unit to another. A conversion factor is a fraction with equal quantities in the numerator and denominator, but written with different units. We want to convert miles to feet. We know how many feet are in 1 mile. We will use this fact to set up a conversion factor. There are 5280 feet in 1 mile. To convert 3.1 miles into feet, multiply by the fraction . Notice how the fractions are set up. The units of miles will cancel, leaving only feet. Finally we can evaluate the multiplication by multiplying across the numerator and denominator. In the numerator, 3.1 times 5280 equals 16368. 3.1 miles is equivalent to 16,368 feet.