As a car accelerates, it does not accelerate at a constant rate; rather, the acceleration is variable. The quadratic function a(t) = 0.70 +1.44t + 1044 describes the acceleration in seconds. Compute the average value of a(t) to estimate the average acceleration between t = 0 and t = 15.5 seconds. Round your answer to five decimal places. Answer: If f(1) = -0.6, f'(x) is continuous, and f'(x)dx = -12.2, what is the value of f(4)? Answer: