Change the following hexadecimal number to decimal form.
A. 2,812
B. 2,702
C. 2,768
D. 2,603
E. 2,581
Answer: D
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Use Newton's Law of Cooling to solve the problem.A cup of coffee with temperature 102°F is placed in a freezer with temperature 0°F. After 5 minutes, the temperature of the coffee is 67.4°F. When will its temperature be 29°F? Round your answer to the nearest minute.
A. 21 minutes after being placed in the freezer B. 24 minutes after being placed in the freezer C. 14 minutes after being placed in the freezer D. 15 minutes after being placed in the freezer
Perform the indicated operations and write the result in standard form.
A. -1 + i
B. 1 + i
C. -1 - i
D. -1 - i
Add or subtract as indicated.Subtract. 
A. -16z2 - 5z + 8 B. 6z2 - 19z + 12 C. -6z2 + 19z - 12 D. 16z2 + 5z - 8
Find decimal notation, round as indicated.
Round to the nearest tenth.
A. 0.9 B. 1.0 C. 0.3 D. 0.8