The $315 cost of the couch after tax, gives the cost before tax, <em>C</em>, as the following equation;

<h3>How can the cost before tax be expressed?</h3>
The cost of the couch with tax = $315
Let, <em>t</em>, represent the tax rate, and let <em>C</em>, represent the cost before tax, we have;
315 = C + C × t
Which gives;
- The cost of the couch before tax, <em>C </em>= 315/(1 + t)
Mathematically, we have the following equation;

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Answer:
a) We get 
So, Is the result of A+B is a polynomial:Yes
b) We get 
So, Is the result of A-B is a polynomial:Yes
c) We get 
So, Is the result of A.B is a polynomial:Yes
Step-by-step explanation:
We are giving the polynomial equations:

We need to find
a) A+B

So, we get 
So, Is the result of A+B is a polynomial:Yes
b) A-B

So, we get 
So, Is the result of A-B is a polynomial:Yes
c) A . B

So, we get 
So, Is the result of A.B is a polynomial:Yes
Answer:
=-7
Step-by-step explanation:
-30=5(x+1)
-30=5x+5
-35=5x
= -7
The graph on #6 describes a scatterplot. Because years of experience is the input, this makes the starting salary our output. Finding the best fitting line in a scatterplot requires the line to follow a trajectory similar to that of the points. As a result, there will be outliers. Since I don't know what "the calculator" is meant by this problem, I have used a different program. I hope it works for you. Good luck.
Hello! The formula for simple interest is prt. That means you multiply the principal (initial amount) by the rate (simple interest percentage), by the amount of time (could be in months or years). So, the loan is $3,750 and the rate is 8.25% for 9 months. 9 months is 3/4 of the year, because there are 12 months in 1 year and 9/12 is 0.75. Let's multiply. 3,750 * 8.25% (0.0825) is 309.375 Now, multiply that number by 0.75 to get 232.03125 or 232.03 when rounded to the nearest hundredth (cent). The amount of simple interest is $232.03.