Simplify the exponential expression.
2
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.How much work is done by a 120-lb woman as she walks up 12 steps, each with a 
-ft rise?
A. 360 ft ? lb B. 1440 ft ? lb C. 2880 ft ? lb D. 720 ft ? lb
Solve.Find the focus and directrix of the parabola x2 - 8x + 4y + 32 = 0
A. F: (4, -3); D: y = -5
B. F: (4, -8); D: y = 0
C. F: 
; D: y = - 
D. F: (4, -5); D: y = -3
Solve.Elissa sells two breeds of dogs, Alaskan Malamutes and Great Pyrenees. She has 92 feet of fencing to enclose two adjacent rectangular dog kennels, one for each breed. An existing fence is to form one side of the kennels, as in the drawing below. Suppose the total length of the two kennels is x feet. Express the total area of the two kennels as a function of x. Graph the function and from the graph determine the value of x that will yield the maximum area.
A. 45 feet
B. 46 feet
C. 48 feet
D. 
feet
Solve the problem.A size 38 dress in Country C is size 11 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find the inverse of the function.
A. f-1(x) = x + 8 B. f-1(x) = 2(x + 8) C. f-1(x) = 2x + 8 D. f-1(x) = 2(x - 8)