Look at the expression below.
expression 1: x-x
expression 2: -2+4/2
expression 3: 1/4+.25
expression 4: -1//5)
zion made a mistake when using the inverse property of addition to generate equivalent expressions. which expression shows the mistake zion made?

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?