Part A
The angle of elevation of the staire case is given by

Part B:
<span>If
the landing of each step is changed to 17 inches and the elevation of
each step to 21 inches, the new angle of elevation for the
staircase is given by
</span><span>

</span>
Answer:
hi........................................
My best guess is a line graph because it shows the consistent numbers and then you can lay them all out after you have completed the graph
Sorry I can’t buddy........................................................:(
Like terms will have the exact same variables and exponents...
like term are : 2xy , xy , 1/2xy