A model of a dinosaur is 12 inches tall. The actual animal is 20 feet. What is the scale factor?
A. 1 inch = 0.6 feet. B. 1 inch = 1.7 feet. C. 1 inch = 2.0 feet. D. 12 inches = 20 feet

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)