What do you do with the exponents to simplify b^13/b^8 ?

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Answer this question! 30 points and brainliest!

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