81502276150938 what is it millions billions trillions anyone know?

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 solution of this system of equation -7x+y=-20 9x-3y=36

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?