First
A. first one is the answer
second
-60 <= m ...first one is the answer
Answer:

Step-by-step explanation:
Collect like terms and calculate the sum
Well i don’t understand your question but the pattern is infinitely (+2) the next 3 terms are 19,21,23
Answer:
mean but im guessing as well
Step-by-step explanation:
Answer:
angle 1 and angle 7
Step-by-step explanation:
If two lines intersected by a transversal form supplementary same-side interior angles, then the lines are parallel.