In December 2016, Marcus purchased a car at RM 60,000 from Toyota UMW Sdn. Bhd. through a hire purchase agreement. He paid RM 20,000 down payment with 20 monthly instalments of RM2,266.67 each. After nine months of payment defaults, the car was legally repossessed and sold for RM 20,000. Find the amount of refund that she would receive from the company or the amount that of money that she would have to pay to the company.

The correct answer is b

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.