X+ y = 0 x - y = 8 what is the solution of the system shown? a; (-8, 12) b; (8, -12) c; (8, 12)

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

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

Abcd is a square. what is the measure of angle bac