Simplify the exponential expression.x ? x7
A. 2x8
B. 2x7
C. x7
D. x8
Answer: D
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Solve the problem.The graph below shows the first derivative of a function y = f(x). Select a possible graph f that passes through the point P. f'
A. 
B. 
C. 
D. 
Solve the problem.A company has 25,200 employees. Of these, 
drive alone to work, 
car pool, 
use public transportation, 
cycle, and the remainder use other methods of transportation. How many employees use each method of transportation?
A. Drive alone: 6400; car pool: 4200; public transportation: 3050; cycle: 2800; other: 1000
B. Drive alone: 6300; car pool: 4200; public transportation: 3150; cycle: 2800; 
C. Drive alone: 630; car pool: 4200; public transportation: 3150; cycle: 2800; 
D. Drive alone: 6300; car pool: 4200; public transportation: 3150; cycle: 2800; 
Answer the question.With respect to what line are the 6 sixth roots of -1 symmetric?
A. The line y = x B. The line y = 0 C. The line x = 0 D. The line y = -x
Perform the indicated operations. Simplify the answer.
A. -5 B. 5i C. 5 D. -5i