Simplify the expression using the properties of operation 7.5+5f+16.2+2f

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

At 6 1/2 cents per pound of string beans how much does 7 pounds cost