+107 Vanessa will graph the lines \(y = \frac{1}{3}x + 7\) and \(y = 2x+5\). What is the sum of the x-coordinates of the two lines' x-intercepts? Express your answer as a decimal to the nearest tenth.
+781 To find the x interept, plug in the value 0 for y in both equations.
y=1/3x+7
0=1/3x+7
1/3x=-7
x=-21
y=2x+5
0=2x+5
2x=-5
x=-5/2
Add them together. -21+(-5/2)=-23.5.
