Solve the problem.Erika spent 
hr on her computer visiting the history channel and the discovery channel websites. She spent 
hr at the history channel website. How many hours did she spend at the discovery channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: D
Mathematics
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Solve the equation.-36 - 9x = -5x
A. 144 B. -144 C. 9 D. -9
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Subtract.-33.12 - 168.54
A. 201.66 B. -201.66 C. 135.42 D. 137.67
Mathematics
A pair of honest dice is rolled, and the number on each die is noted.What is the probability of rolling a total of 2?
A. 
B. 
C. 
D. 
E. none of these
Mathematics
Use the quadratic formula to solve the equation.x2 + 7x + 4 = 0
A. 
B. 
C. 
D. 
Mathematics