Write the next three terms of the arithmetic sequence. Then write a variable expression for the nth term and evaluate it for n = 18

both graphs increase on their domain

neither graph has a y-intercept

step-by-step explanation:

the following points can be visualized easily from the graph

add a picture or measurements so i cab

dont't really have enough info here but its likely

sss for the three sides being congruent ( its stands for side side side)

or

sas   for side angle side.   so a side is congruent and and angle and a side