Answer:
y = -0.005x² + 50
Step-by-step explanation:
The diameter is 200 feet, so the parabola has roots at (-100, 0) and (100, 0). The maximum height is 50, so the vertex of the parabola is at (0, 50).
Using vertex form of a parabola:
y = a (x − h)² + k
y = a (x − 0)² + 50
y = ax² + 50
Plugging in either root:
0 = a (100)² + 50
a = -0.005
y = -0.005x² + 50
153000 x 0.124 = 18972 employees with some college experience
153000 x 0.841 = 128673 employees with bachelor degree
128673 - 18972 = 109701 more writers and authors with bachelor's degree than just some college experience