The price of coffee has dropped to $2.15 today yesterday's price was $2.40 . find the percentage decrease. round your answer to the nearest tenth of a percent

You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?