Answer:
$80.64
Step-by-step explanation:
Time = 4
Rate = 3
Principal Amount = 672
Using the Simple Interest formula:
SI =
where
P -> Principal Amount,
R -> Rate, and
T -> Time
Substituting the given values into the formula:
SI =

<em>Hope this helps and be sure to have a wonderful time ahead at Brainly! :D</em>
Answer:
He have <u>17 CDs</u> on Monday.
Step-by-step explanation:
Given:
On Tuesday James bought seven CDs. On Wednesday half of all the CDs that he had were destroyed. On Thursday he had 12 left.
Now, to find the CDs he have on Monday.
Let the CDs he have on Monday be 
<em>So, on Tuesday as James bought 7 CDs:</em>

<em>Now, on Wednesday half of all the CDs that he had were destroyed:</em>

As, given on Thursday he had left CDs = 12.
According to question:

<em>Multiplying both sides by 2 we get:</em>

<em>Subtracting both sides by 7 we get:</em>

Therefore, he have 17 CDs on Monday.
The sides are 11 each because the square root of 121 is 11. So, the permeter is 11 + 11 + 11 + 11 = 44 inches.
Hope this helped!
The Y-Intercept would be on +4.
K=8k+28
subtract 8k from both side
-7k = 28
divide both side by -7
k= -4