The length of a rectangle is 4 inches more than its width. if the area of the rectangle is 45 sq. inches, what is the width?

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?