Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.(
)2(s-1/8y1/6)-4
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The net income y (in millions of dollars) of Pet Products Unlimited from 1997 to 1999 is given by the equation y = 9x2 + 15x + 52, where x represents the number of years after 1997. Assume this trend continues and predict the year in which Pet Products Unlimited's net income will be $748 million.
A. 2,006 B. 2,007 C. 2,004 D. 2,005
Add or subtract as indicated. Write the answer in simplest form.
- 
A. 
B. - 
C. - 
D. 
Solve the problem.An investor has $400,000 to invest in stocks, bonds, and commodities. If he plans to put three times as much into stocks as in bonds, how can he distribute his money among the three types of investments? (Let x denote the amount put into stocks, y the amount put into bonds, and z the amount put into commodities. Let all amounts be in dollars, and let z be the parameter.)
A. x = 100,000 - z/2, y = 300,000 - z/2, 0 ? z ? 400,000 B. x = 300,000 - z/2, y = 100,000 - z/2, 0 ? z ? 400,000 C. x = 300,000 - 3z/4, y = 100,000 - z/4, 0 ? z ? 400,000 D. x = 100,000 - 3z/4, y = 300,000 - z/4, 0 ? z ? 400,000
Solve.In how many distinguishable ways can the letters of the word WINDOW be arranged?
A. 720 B. 360 C. 120 D. 36