1. Studies illustrate that concentration (in mg/cm^3 of blood) of aspirin in the typical person is related to time (in h) after aspirin reaches its maximum concentration by equation In c = In 14 - 0.45t. Solve for c as the function of t. Write the answer without logarithms.
2. Determine values of trigonometric functions of angle (in standard position) whose terminal side passes through given point. Coordinates are approximate. (37.71,21.86)
3. Grade resistance is F=W sin Theta, where Theta is grade and W is weight of automobile. Find grade resistance of 2200-pound car traveling on 1.9 degree uphill grade?