Solve the problem.The cost of producing t units is C = 2t2 + 7t, and the revenue generated from sales is R = 3t2 + t. Determine the number of units to be sold in order to generate a profit.
A. t > 0
B. t > 8
C. t > 6
D. t > 7
Answer: C
Mathematics
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Determine whether the statement is true or false.If horses have six legs, then Benjamin Franklin was the first president of the United States.
A. True B. False
Mathematics
Solve the problem. Express your answer in simplest form.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
Mathematics
Solve for y.y - 4= - 
x
A. y = - 
x + 4
B. y = - 
x - 4
C. y = 
x + 4
D. y = 
x - 4
Mathematics
Graph the function and give its domain and its range.f(x) = 
A. (-?, ?); (-5, ?)
B. (-?, ?); (-?, ?)
C. (-?, ?); [5, ?)
D. (-?, ?); [-5, ?)
Mathematics