Name the quadrant in which the angle ? lies.sin ? > 0, cos ? > 0
A. I
B. II
C. III
D. IV
Answer: A
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Rewrite the expression as a sum or difference, then simplify if possible.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Solve the problem.The population (in hundred thousands) for a certain country in ten-year increments is given in the table. 
?
?
?
State whether the data can be more accurately modeled using an exponential function or a logarithmic function. Using a graphing utility, find a model for population (in hundred thousands) as a function of decades since decade 0. Round
values to the nearest hundredth. A. logarithmic; y = 1066.55 - 163.04 ln(x) B. exponential; y = 252.68 ? 1.36x C. exponential; y = 249.37 ? 1.36x D. logarithmic; y = -163.04 + 1066.55 ln(x)
Solve.Doreen and Irena plan to leave their houses at the same time, roller blade towards each other, and meet for lunch after 3 hours on the road. Doreen can maintain a speed of 4.2 miles per hour, which is 70% of Irena's speed. If they meet exactly as planned, what is the distance between their houses?
A. 21.42 miles B. 30.6 miles C. 18 miles D. 12.6 miles
Solve the equation.2(5x - 2) = 8x
A. 1 B. -2 C. 2 D. -1