Solve the problem.The shadow cast by an object on a sunny day varies directly as the height of the object. If a person 72 inches tall casts a shadow 55 inches long, how tall is a tree which casts a shadow 48 feet in length?
A. 63.5 feet
B. 36.67 feet
C. 62.84 feet
D. 82.5 feet
Answer: C
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Graph the pair of parametric equations in the rectangular coordinate system.x = 9 cosh t , y = 6 sinh t, -? < t < ?
A. 
B. 
C. 
D. 
A formula is given, along with values for all but one of the variables in the formula. Find the value of the variable that is not given.d = rt; t = 2, d = 8
A. d = 4 B. r = 4 C. r = 6 D. r = 10
Simplify.- 
A. -25
B. 8
C. -5
D. 5
Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. 
+ 
= 4
- 2y = 21
A. (6, 8); consistent and independent B. (-6, 8); consistent and independent C. (6, -8); consistent and independent D. (-6, -8); consistent and independent