Which ordered triple is a solution of this system? x + y = 4 x + z = 6 y + z = 8 a) (5, 3, 1) b) (3, 1, 5) c) (1, 3, 5) d) (1, 3, 4)

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers