Solve.The population of a particular country was 23 million in 1980; in 1990, it was 34 million. The exponential growth function 
describes the population of this country t years after 1980. Use the fact that 10 years after 1980 the population increased by 11 million to find k to three decimal places.
A. 0.240
B. 0.666
C. 0.039
D. 0.049
Answer: C
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Find 
.y = ?x2 + 4x
A. (?x2 + 4x) ln ? (2x + 4) B. (?x2 + 4x) ln ? C. (?x2 + 4x) (2x + 4) D. (x2 + 4x) ?x2 + 4x - 1
Find the quotient. Write the answer in standard form.
A. -10 B. 10i C. -10i D. 10
Solve. Write the fraction in simplest form.The circle graph shows the fraction of books read by grades one through five. What fraction of books was NOT read by the first and fifth grades?
A. 
B. 
C. 
D. 
The function 
represents the value of the U.S. dollar in Indian rupees as a function of time t in days. Find the average rates of change of
over the time intervals
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,
,
, and
days. Estimate (using 
) the instantaneous rate of change of R at time 
. Please select the correct answer rounded to the nearest whole number.
?
A. 443
B. 441
C. 437
D. 446
E. 444