How many times as great as 2x10 ^3 is 8x10^5

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top