Solve.Newton's Law of Cooling states that if a body with temperature T1 is placed in surroundings with temperature T0 different from T1, then the body will either cool or warm to temperature T(t) after time t, in minutes, where 
A cup of coffee with temperature 101°F is placed in a freezer with temperature 0°F. After 7 minutes, the temperature of the coffee is 56.5°F. What will its temperature be 13 minutes after it is placed in the freezer? Round your answer to the nearest degree.
A. 29°F
B. 27°F
C. 34°F
D. 32°F
Answer: C
Mathematics
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The box plots represent a comparison of the annual salaries of a group of public and private employees
The range of salaries for the group of private employees is approximately
A. $20,000. B. $52,000. C. $40,000. D. $56,000. E. none of these
Mathematics
Use Cramer's rule to solve the linear system.
A. {(6, 7, 6)} B. {(5, 4, 7)} C. {(4, -6, -7)} D. {(4, 6, 7)}
Mathematics
Simplify.12x - 4(7y - 9)
A. 12x - 28y + 9 B. 12x - 28y - 36 C. 12x - 28y - 9 D. 12x - 28y + 36
Mathematics
Solve the problem.The sales tax rate in one state is 4.5%. How much tax will be charged on a purchase of 3 chairs at $58 apiece? Round your answer to the nearest cent.
A. $7.83 B. $60.61 C. $2.61 D. $78.30
Mathematics