(I will mark brainlest, I'm just really confused.) (25 POINTS // BRAINLEST)

The table shows the number of runners, in thousands, who participated in the Center Marathon in each of the given years.

The data follows a quadratic regression model.

Part 1: Estimate the number of runners who participated in the marathon in 2001

Part 2: Predict the year 80,000 runners will compete in the Center Marathon

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is