Step-by-step explanation:
hope you can understand
We are given expression:
.
Tyna simplified the given expression to
.
Explanation: In order to simplify
, Tyna need to simplify rational expression
.
On dividing top and bottom by 3, we get
.
Which Tyna got correct.
Now she need to simplify
.
<em>On applying quotient rule of exponents, we need to subtract the exponents of x's.</em>
So, it would be
.
<h3>So, the final answer should be

.</h3><h3>Therefore, Tyan forgot to add exponent to x.</h3><h3>The exponent of x should be 5.</h3>
The number of periods over which interest is calculated on the loan.
We have to determine
The following formula is used to calculate the monthly payment on a personal loan.
<h3>What is the formula used to calculate monthly payments?</h3>
The formula used to calculate monthly payments are as follows;

Where,
1. PV is the present value or the amount of the loan.
2. i is the interest rate per period and is calculated by dividing the yearly percent rate by 100 and by the number of periods in a year.
3. n is the total number of periods and is calculated as the product of the number of periods in a year times the number of years.
Hence, the number of periods over which interest is calculated on the loan.
To know more about Monthly payments click the link given below.
brainly.com/question/14532486