Solve the problem.A cup of coffee is heated to 194°and is then allowed to cool in a room whose air temperature is 
After 11 minutes, the temperature of the cup of coffee is 
Find the time needed for the coffee to cool to a temperature of 102°. Assume the cooling follows Newton's Law of Cooling: U = T + (Uo - T)ekt.(Round your answer to one decimal place.)
A. 15.1 minutes
B. 29.7 minutes
C. 26.4 minutes
D. 41.1 minutes
Answer: C
Mathematics
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Write the ratio as a fraction in lowest terms.8
to 8
A. 
B. 
C. 
D. 
Mathematics
Solve. Write the answer in simplest form.A rectangular flower bed in front of a building measures 4
feet by 2
feet. What is the total area of the flower bed? Hint: The area of a rectangle is the product of the length times the width.
A. 13 square feet
B. 8
square feet
C. 11 square feet
D. 12 square feet
Mathematics
Solve the system of equations.7x + 7y + z = 1 x + 8y + 8z = 89x + y + 9z = 9
A. (0, 1, 0) B. (-1, 1, 1) C. (1, -1, 1) D. (0, 0, 1)
Mathematics
Plot the complex number.z = -2 + i
A. 
B. 
C. 
D. 
Mathematics