Question

The wave heights h in the open sea depend on the speed v of the wind and the length of time t that the wind has been blowing at that speed. Values of the function h = f(v, t) are recorded in feet in the following table.

Use the table to find a linear approximation to the wave height function when v is near 40 knots and t is near 20 hours. (Round your numerical coefficients to two decimal places.)
f(v, t) =

Answer 1