5 A company's marginal cost function is where x is the number of units. T Find the total cost of the first 25 units (of increasing production from x=0 to x=25) Total cost: $Speedometer readings for a vehicle [in motion} at 3-sec0nd intervals are given in the table. t {sec} v {ftfs} 0 36 3 3? 6 38 9 38 12 3? 15 39 Estimate the distance traveEed by the vehicle during this 15-second period using the velocities at the beginning of the time intervals. distance traveled m feet Give another estimate using the velocities at the 9nd of the time periods. distance traveled w feet