100
Assuming you mean each roll has 25 coins, 90 rolls would be $112.50.
No, not everyone has the money to buy a Rolls and there are not enough Rolls built for everyone to have one. ^If every body started to buy rolls royces (it's not going to happen), Rolls Royce motorcars would increase production to meet demand.
Assuming your measurements are correct, I would buy 10 rolls of underlayment = 1000 sf. (Most rolls of underlayment come in 100 ft rolls...but double check the rolls you are getting as there are a few that have other specs).
Of those three, Rolls-Royce would undoubtedly stand highest.
Absolutely not - since potato rolls would not form part of their natural diet !
16 packs would need to be bought for 64 toilet rolls :)
One roll of dimes is 5 dollars. Therefore it would take 4 rolls of dimes to make 20 dollars.
One to a plate would make 84 plates. Two to a plate would make 42 plates.
A sphere rolls because a sphere is like a ball and a ball would roll. Remember round stuff always roll
That would depend entirely on what model of Rolls it is and what condition it's in, and where you are trying to sell it. Too many factors to answer.
The general rule of thumb is at least one roll per person.
The term "good" can be somewhat subjective and you did not specify the type of backpack. Some of the highest rated brands of day or school packpacks are Dakine, JanSport, NorthFace and Nike. Some of the highest rated hiking backpacks are NorthFace, Kelty, and JanSport. Nike, Adidas and UnderArmour have some of the best sports backpacks.