Last year a large trucking company delivered #4.5 × 10^5# tons of goods with an average value of $19,000 per ton. What was the total value of the goods delivered?

↳Redirected from "Suppose that I don't have a formula for #g(x)# but I know that #g(1) = 3# and #g'(x) = sqrt(x^2+15)# for all x. How do I use a linear approximation to estimate #g(0.9)# and #g(1.1)#?"