(a)[2]
On one set of axes, sketch the graphs of $y = |3x - 5|$ and $y = 2x + 7$.
(b)[3]
Solve the equation $|3x - 5| = 2x + 7$.
(c)[2]
Hence solve the equation $|3^{y+1} - 5| = 2 \times 3^y + 7$, and give your answer correct to $3$ significant figures.