Solve the linear inequality. Express the solution using set-builder notation and interval notation. Graph the solution set.
< -10
A. {x|x > -7}; (-7, ?)
B. {x|x ? -7}; (-?, -7]
C. {x|x < -7}; (-?, -7)
D. {x|x ? -7}; [-7, ?)
Answer: C
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The graph below shows estimated world population for the period 4000 BC - 2000 AD. Note that the logarithm of the world population and not actual population is plotted on the vertical axis. This means, for example, that when the graph reaches 7 on the vertical scale, world population is 107 and when the graph reaches 9 on the vertical scale, world population is 109. Log World Population 
? Year Use the graph to answer the question.During the period 4000 BC to 1000 BC, approximately what was the doubling time for world population?
A. Approximately 3000 years B. Approximately 1000 years C. Approximately 5000 years D. Approximately 23,000 years
Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 2 + 2i, z2 = 
- i
A. 4
(cos 345° + i sin 345°)
B. 4(cos 345° + i sin 345°)
C. 4
(cos 15° + i sin 15°)
D. 4(cos 15° + i sin 15°)
Write the expression in expanded form.113
A. 11 ? 11 B. 11 ? 11 ? 11 C. 11 + 11 + 11 D. 11 ? 3
Solve.A student scored 71, 80, and 96 on three algebra tests. What must he score on the fourth test in order to have an average grade of at least 85?
A. 82 B. 29 C. 62 D. 93