Solve the problem.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. They used 100 black, 110 white and 90 red wires. How many of each cable were made?
A. 20 cable A
30 cable B
10 cable C
B. 10 cable A
30 cable B
20 cable C
C. 10 cable A
103 cable B
20 cable C
D. 10 cable A
30 cable B
93 cable C
Answer: B
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Use the unit circle to find the value of the trigonometric function.cot 
A. 1 B. undefined C. -1 D. 0
Solve the problem.The populations and land areas are shown in the table for various regions:
(i) The unit ratio of population to land area is called the population density. Find the population density of each region listed in the table.(ii) Which region listed in the table has the greatest population density? (iii) Which region listed in the table has the least population density?
A. (i) Region K: 
; Region L: 
; Region M: 
;
Region N: 
; Region O: 
(ii) Region L has the greatest population density.
(iii) Region K has the least population density.
B. (i) Region K: 
; Region L: 
; Region M: 
;
Region N: 
; Region O: 
(ii) Region K has the greatest population density.
(iii) Region L has the least population density.
C. (i) Region K: 
; Region L: 
; Region M: 
;
Region N: 
; Region O: 
(ii) Region O has the greatest population density.
(iii) Region K has the least population density.
D. (i) Region K: 
; Region L: 
; Region M: 
;
Region N: 
; Region O: 
(ii) Region N has the greatest population density.
(iii) Region K has the least population density.
Solve.At the start of a chemistry experiment, Sarah measured the temperature of a liquid to be 
At the end of the experiment, it had risen 
What was the liquid's temperature at the end of the experiment?
A. -35°C B. -23°C C. 23°C D. 35°C
Solve.The difference between two positive integers is 20. One integer is three times as great as the other. Find the integers.
A. 10 and 30 B. 20 and 30 C. 10 and 20 D. 30 and 50