Simplify by using the distributive law and combining like terms.-2(2t - 5) - 6(4t + 3) + 4t
A. -80t - 8
B. -24t + 2
C. -80t - 2
D. -24t - 8
Answer: D
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A. 
B. 
C. 
D. None of the above
Write the ratio in fractional form and simplify completely.2.25 liters : 54 hours
A. 
B. 
C. 
D. 
Find the exact value under the given conditions.Given sin ? = - 
, with ? in quadrant IV, and tan ? = - 
, with ? in quadrant II. Find cos (? + ?).
A. - 
B. 
C. 
D. 
Solve the problem.The first recorded population of a particular country was 30 million, and the population was recorded as 38 million 8 years later. The exponential growth function 
describes the population of this country t years since the first recording. Use the fact that 8 years later the population increased by 8 million to find k to three decimal places.
A. 0.880 B. 0.040 C. 0.030 D. 0.260