To increase revenue, a county wants to increase park fees. The overall income will go up, but there will be expenses involved in collecting the fees. For a p%
increase in the fees, this cost C will be C = 0.6p2 - 7.2p + 48, in thousands
of dollars. What percent increase will minimize the cost to the county? Show
your work.

He secknd step was the answer to them

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.

A: 18/15b : 7 - -8 = 15 , 12 - -6 = 18 the y variable always goes over the x variables, c : same thing a