Answer:
Two angles are called supplementary when their measures add up to 180 degrees.
The answer is 35 because if he has three shelves and 40 can fit on each, that would be 40 on shelf 1, 40 on shelf two and 5 on shelf three. 40 - 5 is 35. Therefore, it is 35.
Expand out, this literally just wants you to multiply everything by -1.
so 7*-1 = -7
-c*-1 = c
thus putting them together to get -7+c which is just c-7
60% of 45 is 27. Hope this helped.
If a > 1 then its s vertical stretch by a factor a.
If a < 1 its a compression
