Solve the problem.Let u = ln a and v = ln b. Write the following expression in terms of u and v without using the function ln.ln 
A. 27u + 12v
B. 27u - 12v
C. 9u - 4v
D. 3u - 
v
Answer: D
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Solve the problem.Suppose y = mx + b is a mathematical model for actual time as a function of estimated time, where y represents actual time and x represents estimated time and m and b are constants. If m = 0.8 and b = -2.1, find y when x is 60 min.
A. 45.9 min B. 50.1 min C. 61.68 min D. 58.32 min
Solve the system of equations graphically. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent of dependent.5x + y = 25x + y = 7
A. No solution, inconsistent
B. (5, -3)
C. Infinitely many solutions, dependent
D. (1, -3)
Solve the problem.Martin purchased some municipal bonds yielding 8% annually and some certificates of deposit yielding 11% annually. If Martin's investment amounts to $23,000 and the annual income is $2230, how much money is invested in bonds and how much is invested in certificates of deposit?
What will be an ideal response?
Perform the indicated operations and express your answer in the form a + bi. 
A. ±4
B. -4i
C. 4i
D. -i