21. What is the inverse function for y = f(x) = } (3x + 5)? (a) = = g(y) = (2y -5) 2 (b) y = g(x) = 3.c + 5 (c) y = g(@) =2 5 -2r 3 (d) x = g(y) = }(3y + 5) (e) x = g(y) = 6 22. Consider the triangle shown in the diagram below. To the nearest tenth, what is the length of Side a? B A 33.0 C 45.2 in (a) a = 29.4 inches (b) a = 69.6 inches (c) a = 83.0 inches (d) a = 37.9 inches (e) a = 24.6 inches 23. Annabeth needs to know the dimensions of a triangular piece of property whose boundaries are shown below. She can measure two sides directly, but unfortunately, one side lies in a lake and cannot be reached. To the nearest tenth of a foot, what is the length of the unknown side? C B A 119.0 60.0 ft 90.8 ft (a) c= 108.8 feet (b) c= 149.8 feet (c) c = 163.0 feet (d) c = 100.0 feet (e) c = 130.9 feet 24. Nancy starts eating a bowl of soup at noon, and it takes her twenty minutes to finish. Which of the following is a varying quantity in this situation? (a) the bowl (b) the weight of soup in the bowl in ounces since noon (c) the time (d) the total time in minutes that passes while Nancy eats (e) Nancy 25. As an ice cube melts, its mass in grams changes at a constant rate with respect to the number of minutes since it began melting Five minutes after the ice cube began to melt, its mass was ten grams. Seven minutes after the ice cube began to melt, its mass was seven grams. What was the constant rate of change? (a) 2 grams per minute (b) -1 gram per minute (c) -1.5 grams per minute (d) 0.7143 grams per minute (e) 1.4 grams per minute