C, because they are all below 90, which is a right angle, and acute angle means less than 90 degree angle, and above 90 degree angle is an obtuse angle.
This is my knowledge, so I might be wrong, but, I am 90% sure I'm right.
Glad I could help, and good luck :)
Answer:
Pattern A starts at 0 and uses the rule Add 2
Pattern B starts at 0 and uses the rule Add 3.
hope this helps
Distribute the negative to the 16 and into the -5
-16+5x
