,. . e .. .7 . . .. (a) Estimate the distance (in ml) the race car traveled during this time period using the velocities at the beginning of the time Intervals. (Round your answer to three decimal places.) mi (b) Give another estimate (in mi) using the v ' mi (6) Are your estimates in parts (a) and (b) upper and lower estimates? Explain. O The velocity is decreasing on the given interval, so the estimate in part (a) eloclties at the end of the time periods. (Round your answer to three decimal places.) is a lower estimate and the estimate in part (b) is an upper estimate. 0 The velocity is increasing on the given interval, so the estimate in part (a) is a lower estimate and the estimate in part (b) is an upper estimate. rval so the estimates in parts (a) and (b) are neither upper nor lower estimates. 0 v lo ' i neither incr sing nor reasi n the given e , O $C$Mdth hag a maertlmate and the estimate in part (b) is a lower estimate. 0 The velocity is decreasing on the given interval, so the estimate in part (a) is an upper estimate and the estimate in part (b) is a lower estimate