Please provide explanation A rectangle has a height of 5 and a width of x2+2

Express the area of the entire rectangle.
Expression should be expanded.

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

What is the absolute value of -100000000000000?