The dimensions of a patio are shown above what is the area in square feet of the patio?​

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

What is the absolute value of -100000000000000?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read