Answer: $9.91
Step-by-step explanation: The correct answer is $9.91 for the jeans. This is calculated by divided the total paid ($10.11) by 1.02, which represents the cost of the jeans + the 2% interest. 10.11 / 1.02 = $9.91.
You can then double check you work by calculating the 2% interest rate of the jeans. $9.91 x 2% = $ .20. The total is $9.91 for the jeans plus $ .20 for the tax, for a total of $10.11, which is the amount in the original problem.
So firstly, add both sides by 6: 
Next, multiply both sides by 4, and your answer will be 
Answer:
$365.70
Step-by-step explanation:
The formula to find this is 
For this, a is the initial amount, r is the growth rate percentage (but displayed as a decimal), and t is time.
So to solve, you would do
Answer:
$1,352
Step-by-step explanation:
The computation of the initial amount is shown below:
As we know that
Ending value = Initial investment × e^{rate, time period}
$1,900 = Initial investment × e^{3.4%, 10}
$1,900 = Initial investment × e^0.34
$1,900 = Initial investment × 1.404947591
So, the initial investment is
= $1,900 ÷ 1.404947591
= $1,352
