How much longer is 2 1/2 inch long piece than a 2/5 inch long piece of string

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Find the multiplicative inverse of 8-12i

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.