I'm Chloe can you help me, Thanks :) Which ordered pair is the solution to the system of linear equations?
5x + y= -4
x =-y -2

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the equation using the point (4,8)

Don't know how to find x given these segment lengths