Solve the problem.The temperature at 5:00 was -4°C. Four hours later, it was -10°C. What was the change in temperature?
A. -14°C
B. 6°C
C. 14°C
D. -6°C
Answer: D
Mathematics
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Express the given expression in simplest form with only positive exponents.
A. 5x
B. 511
C. 
D. 5
Mathematics
Answer yes or no.Is 13 a solution to the equation 18 - x = 5?
A. Yes B. No
Mathematics
Graph the equation using the indicated viewing window.y = x2 + 2;X min = -5X max = 5X scl = 1Y min = -20Y max = 20Y scl = 5
A. 
B. 
C. 
D. 
Mathematics
How many permutations does a combination lock have if each combination has three numbers, no two numbers of any combination are equal, and the lock has 45 numbers?
A. 85,137 B. 85,199 C. 85,131 D. 85,140
Mathematics