Solve the problem.Tracy can wallpaper 5 rooms in a new house in 35 hours. Together with her trainee they can wallpaper the 5 rooms in 19 hours. How long would it take the trainee working by herself to do the job?
A. 75 hr
B. 80 hr
C. 40 hr
D. 35 hr
Answer: C
Mathematics
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Simplify the rational expression.
A. 
B. 
C. 
D. 
Mathematics
Find an equation of variation for the given situation.y varies jointly as x and z and inversely as the product of w and p, and 
when 
and 
A. y = 
B. y = 
C. y = 
D. y = 37pwxz
Mathematics
y?? ?10y? + 25y = 5, y (0) = ?1, y?(0) = 1
Solve the initial-value problem.
Mathematics
Graph the system of inequalities.4x - y ? -8x + 3y ? 3
A. 
B. 
C. 
D. 
Mathematics