2. [12 Points] DETAILS SPRECALC7 2.4.015. A function is given. h(t)=2t2t; t=4,t=6 (a) Determine the net change between the given values of the variable. (b) Determine the average rate of change between the given values of the variable. Z Need Help? 3. [-/5 Points] DETAILS SPRECALC7 2.4.038. MY NOTES l ASi Two speed skaters, A and B, are racing in a SOO-m event. The graph shows the distance they have traveled as a function of the time from the start of the race. (a) Who won the race? 0 skater A O skater B (b) Find the average speed during the first 10 s for each skater: skater A m/s skater B m/s (c) Find the average speed during the last 15 s for each skater. (Round each answer to the nearest whole number.) skater A m/s skater B m/s Need Help