On a given day, the flow rate F (cars per hour) on a congested roadway is given by F=v/28+0.07v^2 where v is the speed of the traffic in miles per hour. What speed will maximize the flow rate on the road? Round your answer to the nearest mile per hour.

Question

anonymous · Answer

the options are
A.10 mph 
B. 17 mph
C. 20 mph
D.18 mph 
E.19 mph

dumbcow · Answer

to maximize F(v) , find vertex of parabola given by curve F(v)

hmm is the function typed correctly? vertex would give a minimum , not maximum
thus there is no maximum ..... higher the speed, higher the flow rate

anonymous · Answer

here is how the equation is suppose to look..

anonymous · Answer

http://blackboard.wcccd.edu/courses/1/MAT-171_Section_B01/ppg/d6/brg00016301d8b631208/q11-1.png

dumbcow · Answer

doesn't show...brings up logon screen

you would need to take a screen shot

anonymous · Answer

im sorry how do i do that?

dumbcow · Answer

there is button "PrtSc" on top of keyboard, just right of "F12" key
it copies the entire screen, then you need to paste into paint then attach to post

anonymous · Answer

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