What is the primary reason traffic laws exist? a) collecting citation fees b) punishing motorists c) maintaining social order d) preventing cost to cities e) ensuring driver safety

E) Ensuring driver safety

Without traffic laws, our roads would be complete chaos, no one would know when to turn and there would be many more accidents and car-accident related deaths. 

The answer is    (d) 7/2======we have    we also  have an integral      notice how function f splits up at x = 0. there's a left piece and a right pieceso we'll need to do the same thing with our integral: split it at x = 0we use a property of integrals that allows us to split up and sum:     notice that for the piecewise function f, the function has the equationf(x) = x when x  ≤ 0. so for the integral  , f(x) = x so it changes into      for the piecewise function f, the function has the equationf(x) = x+1  when x  > 0. for the integral  , we have    therefore, back to our splitted integral: