A hyena can run one over four of a mile in 22.5 seconds. At this rate, which equation can be used to determine how fast a hyena runs in miles per hour?

Four of a mile = 4 * 1mile = 4 miles

4 miles per 22.50 seconds

1 hour = 60 minutes

1 minute = 60 seconds

1 hr * 60min/hr * 60sec/min = 60 * 60 seconds = 3,600 seconds

3,600 / 22.5 = 160

160 x 4miles = 640 miles

A hyena runs 640 miles per hour.