Summarize euclidean elementary geometry.

How do i i solve this equation? -18 = x/3 + 3

Given: pb tangent pv,pu secants if m = 80° and m = 30°, then m 3 = 55 40 25

Suppose you are analyzing the relationship between time and distance given in a table,and there are 4 values for each quantity.you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer.what can you say about the relationship?