Before the start of professional soccer games, the balls must be inflated to a pressure of 13 psi with an absolute error of 0.5 psi. Find the minimum and maximum acceptable air pressures for soccer balls.
We can write an absolute value equation for this situation, then solve
|p – 13| = 0.5
p – 13 = 0.5 or p – 13 = -0.5
p = 13.5 or p = 12.5