The area of a square is represented by 9x^2-12x+4 which expression represents the perimeter of the square?
a) 3z-2
b) 3z+2
c) 6z-4
d) 12z-8

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?