How do you do these? Would they equal 180?

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

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100