consider the utility function u(x1,x2)=(x1+2)(x2+1)with corresponding Marshallian and Hicksian demand function

With #! i’ve tried to figure it out but i can’t.

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?