Sketch the region bounded by the curves, and visually estimate the location of the centroid. (Do this on paper. Your instructor may ask you to turn in this work.) Then find the exact coordinates of the centroid. y = ex y = 0, x = 0, x = 4

4. find the geometric mean of 4 and 12. 24 8

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?