Question

Due e height y (in feet) of a ball thrown by a child is =--x2 + 2x + 3 14 where c is the horizontal distance in feet from the point at which the ball is thrown. (a) How high is the ball when it leaves the child's hand? Preview feet (b) What is the maximum height of the ball? Preview feet (c) How far from the child does the ball strike the ground? Get help: Vide Points possible: 1 Preview feet Unlimited attempts Submit A box with a square base and no top is to be made from a square piece of carboard by cutting 2 in. squares from each corner and folding up the sides. The box is to hold 2312 in3. How big a piece of cardboard is needed? Your answer is: in. by n. Get help: Video License Points possible: 1 Unlimited attempts. Submit A baseball team plays in a stadium that holds 64000 spectators. With the ticket price at S11 the average attendance has been 28000 When the price dropped to $8, the average attendance rose to 32000. Assume that attendance is lincarly related to ticket price. What ticket price would maximize revenue? S Get help: Video Preview License Points possible: 1 Unlimited attempts. Submit

Answer 1

luhon it loave the cChild's hand0 dy hei luhon the ball Sloike te undo 14 x-|29.42721 fcot

let ts ahiwensibns 2. 2 in SgHalk an at fen Cnch Cut Rem each 2. 2. henda tha Jo cuge Veluna, thu bo tan held is 312 "X-38 un (3) gium that he attendance us lirealy Uelabd to ticka hurQ Let χ ec da, the ticket toire m and C ate Cetonte be decide, 32000= 8 m-+-C 3m~-4000 → C= 28000 + 44000-128000 hence 3 3 400012 900 200D 3

andance enue tic 4000 12 800o uhen gevenue us maximum 4000 12800o + χ (-4000)