Find the solution set for the equation.|x - 1| = 2
A. {-3}
B. {-1, 3}
C. {1, 3}
D. ?
Answer: B
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Solve the equation.-6.15 + x = -5.67
A. -11.82 B. 11.82 C. 34.871 D. 0.48
Write the fraction in simplest form. Assume that all variable factors in the denominator are not equal to zero.
A. 
B. 
C. 
D. 
Perform the indicated operation. Simplify the result.
- 
A. 
B. 
C. 
D. 
Solve the problem.When a cup of coffee is poured, its decrease in temperature each minute is proportional to the difference between the coffee temperature and the room temperature at the beginning of the minute. Suppose that the room temperature is 60°, the temperature of the coffee is 150°, and the constant of proportionality is 0.25.(a) Write the difference equation for yn, the temperature of the coffee after n minutes.(b) Solve the difference equation.(c) What is the temperature of the coffee after two minutes? (d) Make a rough sketch of the graph of the solution of the difference equation in (b). 
What will be an ideal response?