X=-b/2a=4/14=2/7
Plug this value back into the function to find the corresponding Y value
Step-by-step explanation:
You want the to find the value of k such that the y coordinate of the vertex is 0.
0=x2−6x+k
The x coordinate, h, of the vertex is found, using the following equation:
h=−b2a
h=−−62(1)=3
Evaluate at x = 3:
0=32−6(3)+k
k=9
($35.50-$13) divided by $1.50=$22.5 divided by $1.50=15 rides
you can go on 15 rides.
C. 750
You can either take the 15,000 x 5%
or
15,000 x .005
Which will both give you the answer of 750 :)
