Answer:
-18
Step-by-step explanation:
-18
To subtract? as minus means subract/take away?
Answer:
Triangle
Step-by-step explanation:
all of them have parallel sides except triangle
Answer:
The second one: r x-axis. R 90(x,y)
Step-by-step explanation:
You can see that from ABC to A'B'C', it's rotated a positive 90 degrees. then, from A'B'C' to A"B"C", reflected across x-axis. and when writing the transformation, it goes by last to first. that's why the R 90 comes first.