2,4 and 3,1 on the line

What is 1/2 x (6 x 4)+3 + 2 show your work

Solve the system of equations. y= 2x y= x^2 - 15

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?