Answer
a. (4, 9250)
b. 187.5 thousand employees per year
c. 1.99% per year
Work Step by Step
a. Find a point on the tangent line for estimation.
b. Calculate the slope using rate of change formula $\frac{y_{1}-{y}_{2}}{x_{1}-{x}_{2}}$ to get the number of employees per year.
c. Calculate the percentage rate of change at the point dividing the rate of change at a point by the value of the function at that point and then multiplying by 100%.