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 105°F is placed in a freezer with temperature 0°F. After 5 minutes, the temperature of the coffee is 69.3°F. What will its temperature be 20 minutes after it is placed in the freezer? Round your answer to the nearest degree.
A. 18°F
B. 16°F
C. 17°F
D. 20°F
Answer: D
Mathematics
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Subtract.-5 - 21
A. -16 B. 16 C. 26 D. -26
Mathematics
Solve and graph.7x + 10 < -4 and 5 - 9x > -22
A. (-?, -2) ? (3, ?)
B. (-?, 3)
C. (-?, -2)
D. (-2, 3)
Mathematics
Use a formula to solve the problem.A square plywood platform has a perimeter which is 8 times the length of a side, decreased by 24. Find the length of a side.
A. 6 B. 4 C. 1 D. 10
Mathematics
Find the whole.89 dogs is 90% of what number of dogs?
A. 99 dogs B. 10 dogs C. 80 dogs D. 990 dogs
Mathematics