Solve the problem.The world reserves of oil are about 923 thousand million barrels. In 1990 the world use of oil was 6,600 million barrels and the growth rate for the use of oil was 10%. Assuming that this growth rate continues and that no new reserves are discovered, in what year will the world's reserves of oil be exhausted?
A. 2012
B. 2010
C. 2017
D. 2022
Answer: C
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Use Jefferson's method to find the apportionment.A small country consists of seven states; there are 160 seats in the legislature that need to be apportioned among the seven states; and the population of each state is shown in the table.
Find the apportionment for state D using Jefferson's method.
A. 23 B. 25 C. 26 D. 24
Use the order of operations to evaluate the expression.65 - 3 ? 18 + 130 ÷ (-13)
A. -16 B. 1 C. -706 D. 1106
What part of the set of objects is shaded?
A. 
B. 
C. 
D. 
Solve the problem.Linda invests src="https://sciemce.com/media/4/ppg__tttt0525191057__f1q144g6.jpg" alt="" style="vertical-align: -4.0px;" /> and 
for one year. Part is invested at 
, another part at 
, and the rest at 
. The total income from all 3 investments is 
. The combined income from the 
investments is the same as the income from the 
investment. Find the amount invested at each rate.
A. $10,000 at 5%; $10,000 at 6%; $5000 at 8%
B. $5000 at 5%; $10,000 at 6%; $10,000 at 8%
C. $8000 at 5%; $10,000 at 6%; $7000 at 8%
D. $10,000 at 5%; $5000 at 6%; $10,000 at 8%