How much radioactive kind of europium will be left after 39 years if the half life is 13 years and you start with 1216 grams

Unfortunately, you haven't shared the graph mentioned in this problem.  thus, i cannot determine whether you meant linear function or exponential functions.if your functions are indeed linear, then you'll need to solve the systemf(x)=−2x+2 and g(x)=(13)x+1, ory =−2x+2y= 13x+1to do this, let y = y:   -2x+2 = 13x+1, or 1=15x, or x = 1/15.subst. (1/15) for x in the first equation, y = -2x+2, and calculate y.then write your solution in the form (1/15, ).