What are the possible values of x in 6^2 + 432=0

a. ‘strackel (+ 2isqrt(3)’
b. strackel (+ 6isqrt(3)’
c. strackel (+ 4isqrt(2)’
d. strackel (+ 6isqrt(2)’

Carl wants to buy a television that cost $500 including taxes. to pay for television he will use a payment plan that requires him to make a down payment of $125 and then pay $70.50 each month for six months what is the percent increase from the original cast of the television to the cost of the television using a payment plan.

Ihave trouble finding the nth term of a linear sequence

Is this a polynomial function? i need to know asap