Answer:
y=(x-75)2+100
Step-by-step explanation:
It is easier if you translate the information given into the cartesian plane in this particular case your horizontal distance will have to be divided by 2 because when an object is thrown upwards the maximum height is at the middle point of the horizontal distance so the coordinates of the soccer ball will be (75,100) that is the vertex of the parabola.
So using the formula for the parabola that is
y=(x-h)2+k
where h is the x cordinate of the vertex and k is the y coordinate of the vertex will have that the equation for this problem is y=(x-75)2+100