Number your answers please and thank you...

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?

Is the point (0, 8) on the x-axis or y-axis? how do you know?