Ivan and Teresa each opened a savings account today. Ivan opened his account with a starting amount of $320, and he is going to put in 585 per month Teresa opened her account with a starting amount of $820, and she is going to put in $35 per month
Let x be the number of months after today.

After Ivan puts in $585 each month in just one monthes it would be a total of $905 dollers. After Teresa puts $820  in her new bank account  she puts in $35 per month just one month she has $940 In her bank account.

Step-by-step explanation: Sorry if it is wrong

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!