Please help! the length of the algebra 1 textbook is 11.6 inches

a) find the GPE

b) Find the maximum and minimum lengths

c) if the width of the textbook is 8.7 inches what is the maximum area of the cover?

d) if the height of the book is 3 inches what is the minimum volume of the book? (if the book were hollow)

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.