Solve the problem.The shadow cast by an object on a sunny day varies directly as the height of the object. If a person 61 inches tall casts a shadow 65 inches long, how tall is a tree which casts a shadow 49 feet in length?
A. 63 feet
B. 45.98 feet
C. 52.21 feet
D. 80.92 feet
Answer: B
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Determine whether the graph is a complete graph.
A. No B. Yes
Graph the equation by plotting points. Use values of ? that are multiples of 30°.r = -6 cos ?
A. 
B. 
C. 
D. 
Solve the problem.The number of acres in a landfill is given by the function 
where t is measured in years. How many acres will the landfill have after 1 years? (Round to the nearest acre.)
A. 3832 acres B. 5594 acres C. 4090 acres D. 12,882 acres
Solve the problem.A rotating beacon is located 10 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aimed is given by a = 10|sec 2?t|,where t is in seconds, find a when t = 0.33 seconds. Round your answer to the nearest hundredth.
A. 19.64 ft B. -20.76 ft C. 20.76 ft D. 20.20 ft