Whats the answer to this ive been stuck on it forever

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok