Solve the problem.A painter can finish painting a house in 5 hours. Her assistant takes 7 hours to finish the same job. How long would it take for them to complete the job if they were working together?
A. 2
hr
B. 
hr
C. 6 hr
D. 4 hr
Answer: A
Mathematics
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Determine whether the improper integral converges or diverges.
A. Converges B. Diverges
Mathematics
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 2x8 + 4x6 + 2x4 + 7x2 + 2
A. 
B. 
C. 
D. 
Mathematics
The maximum value of 
subject to
is:
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality, then graph the solution.
t ? - 60
A. t ? 45
B. t ? -45
C. t ? 45
D. t ? -45
Mathematics