I need help with question 4

Firefox File Edit View History Bookmarks Tools Window Help 64% . Sun 7:51:32 PM Q = . . . VA HW 3.4 - Applications of Quadrat X * Course Hero X C Search All Matches | Chegg.com X + https://www.webassign.net/web/Student/Assignment-Responses/last?dep=24037985 E 4. [-/0.71 Points] DETAILS 0/30 Submissions Used MY NOTES The monthly revenue R (in thousands of dollars) from the sales of a digital picture frame is approximated by R(p) = -7p- + 1106p, where p is the price per unit (in dollars). (a) Find the monthly revenues for unit prices of $50, $70, and $90. R(50) = $ thousand R(70) = $ thousand R(90) = $ thousand (b) Find the unit price that will yield a maximum monthly revenue. p = $ (c) What is the maximum monthly revenue? R = $ thousand 5. [-/0.71 Points] DETAILS 0/30 Submissions Used MY NOTES The height y (in feet) of a punted football is approximated by y =. 16 x2 + 2x + 5 1225 5 JUL 33 12 GAS ... W W