When you divide exponents, you have to subtract them. So -4-3= -7 as the exponent
When you have a negative exponent, then you have to flip the fraction (all whole numbers are over 1 so flip the 1 to the top and the 5^7 on the bottom)
N/30 the net amount is due within 30 days after the sales invoice date.
So the last day to pay the invoice is
May 31 st
5x-39.2
You get this answer my combining like terms