Solve the problem.Newton's Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. Suppose that a coffee is served at a temperature of 150°F and placed in a room whose temperature is 70°F. The temperature ? (in °F) of the coffee at time t (in minutes) can be modeled by ?(t) = 70 + 80e-0.06t. When will the temperature be 105°F?
A. 13.8 minutes
B. 6.9 minutes
C. 5.9 minutes
D. 6.2 minutes
Answer: A
Mathematics
You might also like to view...
Solve the problem.A generator produces an alternating current according to the equation 
, where t is time in seconds and I is the current in amperes. What is the smallest time t such that I = 36?
A. 
sec
B. 
sec
C. 
sec
D. 
sec
Mathematics
Determine whether the line has a positive or negative slope.
A. Positive B. Negative
Mathematics
Perform the indicated operation. Write the answer in scientific notation.
A. 9.62 × 10-15 B. 9.62 × 10-1 C. 4.81 × 10-15 D. 4.81 × 10-1
Mathematics
The distance around a certain planet at the equator is 29,863 km. What is the distance around the planet in miles? Round to the nearest whole number.
A) 18,548 mi B) 30,914 mi C) 24,731 mi D) 12,366 mi E) 6183 mi
Mathematics