Jasmine bought a game system that cost $299 before tax. The total including sales tax was 1.07 times the price. A discount was then applied by multiplying the total price by 0.90. What was the total cost of the game system including the sales tax and discount? A: 273.56
B: 278.06
C: 287.94
D: 289.79

I’m not sure what sujevtbis this

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.