Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.163 lb = 
kg
A. 172.8
B. 414.0
C. 74.1
D. 358.6
Answer: C
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Perform the indicated operations and write the result in standard form.
+ 
A. -12 B. -12i C. 12i D. 32i
Convert.66.05 hectometers = _____ kilometers
A. 6.605 B. 0.661 C. 660.5 D. 6605
Find the coefficient of  figure 1.png)
in the expansion of  figure 2.png)
(a) -28 (b) 28 (c) -56 (d) 56 (e) 70
Solve the problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 37 units of vitamin A, at least 8 units of vitamin B, and at least 26 units of vitamin C. The red vitamin pills cost 
each and contain 7 units of A, 1 unit of B, and 2 units of C. The blue vitamin pills cost 
each and contain 3 units of A, 1 unit of B, and 7 units of C. How many pills should the patient take each day to minimize costs?
A. 6 red and 2 blue B. 7 red and 1 blue C. 8 red and 0 blue D. 2 red and 6 blue