Answer:
Step-by-step explanation:

b.
an=an-1+3
C.
when x=15
y=3×15-2=45-2=43
a15=43
Answer:
I: 82.1
Step-by-step explanation:
Answer: 31.5 in.
Answer:
the answer is 13 cm
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
;)
Answer:
It has two solutions
Step-by-step explanation:
The system 
If we try to simplify the fractions applying the Lesser Common Factor
We obtain this:

From this equation, you can see a square term coming up, from where we can say that this system has two solutions