## Calculus (3rd Edition)

|a-6| $\leq$ 2 a-6 $\leq$ 2 , a-6 $\geq$ -2 a $\leq$ 8 , a $\geq$ 4 4 $\leq$ a $\leq$ 8 |b| $\leq$ 3 b $\leq$ 3 , b $\geq$ -3 -3 $\leq$ b $\leq$ 3 max| a + b | = max(a) + max(b) = 8 + 3 = 11 min| a + b | = min(a) + min(b) = 4 + (-3) = 1