Well if finding X you get 4,-7 when you simplify the whole equation you get that as well.
Answer:
a.$138
b.$197
Step-by-step explanation:
(/=division)
a.415/30=138
b.138/7=197
Hope I helped :D
Certain means the event will happen.
Impossible means the event would never happen.
The letter that has no right angles is N