Can someone help me to answer all the questions correctly, please, and explain it. Also, would you please in a way I can understand the writing, please.

This is Calculus 1.

1.

The speed of a runner increased steadily during the first three seconds of a race. Her speed at half-second intervals is given in the table. Find lower and upper estimates for the distance that she traveled during these three seconds. ft (smaller value) ft (larger value) t (s) 0 0.5 1.0 1.5 2.0 2.5 3.0 v (ft/s ) 0 15.7 11.2 14.1 18.8 19.4 20.2 Need Help? Watch It Master ItExpress the limit as a definite integral on the given interval. lim [2(x,*)3 - 8x/ 14x, [2, 9] i = 1 dx 12