1) Suppose a company's total cost in dollars from the production of x units is given by C(x) = 0.0001x 3 + 0.005x2+28x + 3000 Find the average rate of change of total cost when production changes from 100 to 300 Units? * 22 2) Let f(x) = 3x + 3x -18 Find a such that f(x) is continuous for all x Solve the linear system using Cramer's Rule 2x -y-z=1 x+y+z=2 X-2+ = -2 Evaluate - 1x