## Algebra 1: Common Core (15th Edition)

(Convert miles per hour to feet per second) $\frac{26 mi}{1 hr}\times\frac{1 hr}{3600 s}\times\frac{5280 ft}{1 mi}=\frac{137,280 ft}{3600 s}$ (Find common denominator for feet per second) $\frac{44ft}{1s}\times\frac{3600}{3600}=\frac{158,400}{3600}$ (Find the difference in speeds) $\frac{158,400}{3600}-\frac{137,280}{3600}=\frac{21,120}{3600}\approx5.9 ft/s$