Perform the indicated operation and write the answer in lowest terms.
- 
A. 7
B. 
C. 
D. 
Answer: B
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Test the vector field F to determine if it is conservative.F = 
i + 
j + 
k
A. Conservative B. Not conservative
Write the logarithmic equation as an exponential equation.log2x = 3
A. 2x = 3 B. 32 = x C. x3 = 2 D. 23 = x
Solve the problem.A survey of the interest rates earned by Certificates of Deposit (CDs) showed the following percents for the length of time (in years) for holding the CD. Let length of time represent the independent variable and interest rate represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the estimate of the interest rate for a CD held for 30 years (to the nearest hundredth)? 
A. 8.68% B. 9.06% C. 8.66% D. 8.87%
Solve the system of equations by Gauss-Jordan elimination.
A. {(5, 4, 3)} B. {(3, 5, 4)} C. {(5, 3, 4)} D. ?