You would be able to use your debit card for purchases with even a negative balance, in this case of course, your transaction would work.
3^x + 3^2 = 90
Simplify the known power:
3^x + 9 = 90
Subtract 9 from both sides:
3^x = 81
Take the cubic root of both sides:
X = 4
if the 20% of a number is 386, what will be 30% of the same number
Answer will be 157
The answer is 2 and negative 9
