Is there an article or a text that you have to do this off of??
Given that for each <span>$2 increase in price, the demand is less and 4 fewer cars are rented.
Let x be the number of $2 increases in price, then the revenue from renting cars is given by

.
Also, given that f</span><span>or each car that is rented, there are routine maintenance costs of $5 per day, then the total cost of renting cars is given by

Profit is given by revenue - cost.
Thus, the profit from renting cars is given by
</span><span>

For maximum profit, the differentiation of the profit function equals zero.
i.e.
</span><span>

The price of renting a car is given by 48 + 2x = 48 + 2(8) = 48 + 16 = 64.
Therefore, the </span><span>rental charge will maximize profit is $64.</span>
Answer:
|AB| = √((7 - (-2))^2 + (-3 - 9)^2) = 15
|BC| = √((-2 - 7)^2 + (-3 - (-3))^2) = 9
|AC| = √((-2 - (-2))^2 + (-3 - 9)^2) = 12
Perimeter = 15 + 9 + 12 = 36
It can be written as 12/100
or reduced to 6/50
or reduced even further to 3/25