Divide and/or multiply as indicated. Simplify and leave the numerator and denominator in your answer in factored form.
÷ 
A. 
B. 
C. x + 3
D. 
Answer: D
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Solve the initial value problem.u'(x) = 5u + 15, u(1) = 1
A. u = e5x - 5 - 3 B. u = 4e5x - 5 - 3 C. u = 12e5x + 5 - 3 D. u = 12e5x + 5 + 3
Determine if the two lines are parallel, perpendicular, coinciding, or only intersecting.3x - 2y = 6 4x + 4y = 6
A. parallel B. coinciding C. perpendicular D. intersecting
Solve the system by the addition method.
A. {(5, 4), (-5, -4)} B. {(4, 5), (-4, 5), (4, -5), (-4, -5)} C. {(4, 5), (-4, -5)} D. {(5, 4), (-5, 4), (5, -4), (-5, -4)}
Solve the problem.The average number of vehicles waiting in line at a toll booth of a super highway is modeled by the function 
, where x is a quantity between 0 and 1 known as the traffic intensity. To the nearest tenth, find the average number of vehicles waiting if the traffic intensity is 0.81.
A. 3.5 vehicles B. 1.6 vehicles C. 8.5 vehicles D. 6.9 vehicles