Set up a proportionality and simplify the fraction...hope this helps :)
A= 9
B= 11
Make sure to try it
Answer:

Step-by-step explanation:

Replace the n with n+1 to find the (n+1)st term.

Expand brackets.

Add like terms.

If he has 12 nails left, he used 36 nails.
Answer:
60
Step-by-step explanation:
12x5=60 and 15x4=60 so 60 is the LCM