Homework Help: algebra

Posted by tom on Saturday, October 9, 2010 at 2:22pm.

the time that a traffic light remains yellow is 1 second more than 0.05 times the speed limit. what is the yellow time for a trafic light on a street with a speed limit of 30 mi/h?

algebra - Reiny, Saturday, October 9, 2010 at 2:26pm
let the equation be

time = 1 + .05v , where v is the speed limit

so when v = 30
time = 1 + .05(30) = 2.5

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