Sophia College Algebra MM212 Final Milestone With rationale 2022 update

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.