Nate's weekly pay increased from $710 to $770. Which of the following is closest to the percent that his pay increased?
(1) 7.2%
(2) 8.5%
(3) 7.8%
(4) 8.9%

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.