Answer:
0
Step-by-step explanation:
0
For number 9 it's x+8= 14 and 7x=21
For number 10 the answer is that Beth is correct because the only number that could be replaced for x would be 2. There is no number besides 2 that you could put in the equation x+3=5 to get the answer 5.
It should be 122° if I am not mistaken
Your answer would be (w+2)(w−10). If you want me to explain please don't hesitate to ask.