7 is the right answer(please rate 5.0 stars so i can help other people out thanks)
Answer:
Step-by-step explanation:

b.
an=an-1+3
C.
when x=15
y=3×15-2=45-2=43
a15=43
Answer:
116
Step-by-step explanation:
supplementary means 180 so 180-64 = 116
hope this helps! :)
Answer:
bonjour voilà la réponse 4.55