A rectangle has a width of 4.5 units in the length of x+3, write an expression showing how to find the area of the rectangle

You need to show the length times the width. Answer

How else could you write it?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.