Answer:
Step-by-step explanation:
The vertex is at the turning point. According to the graph, that point is (-2,3).
The axis of symmetry passes through the vertex: x = -2
here we have the equation figure out the total cost for the amount of posters she is going to buy!
x=posters
y= dollars
here we have 7 posters so just plug in 7 for x in y=7.75x
y=7.75(7)
just calculate it and you will get 54.25
54.25 = total cost for 7 posters!!!
All you have to do is line it up with the numbers
Wait hold up i think i can help you with this-
