A student bought a smartwatch that tracks the number of steps she walks throughout the day The table shows the num ber of steps recorded minutes after 3 00 PM on the first day she wore the watch t min Steps 10 20 30 40 3438 4559 5622 6536 7398 0 Matala BORDE PAPINH AMITRIP Helen www ke a Find the slopes of the secant lines corresponding to the given intervals of t What do these slopes represent ii 10 20 iii 20 30 i 0 40 b Estimate the student s walking pace in steps per minute at 3 20 PM by averaging the slopes of two secant lines