5-3x is 12 less than 8
1 answer:
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Given:
There exist a proportional relationship between x and y.
To find:
The equation which represents a proportional relationship between x and y.
Solution:
If there exist a proportional relationship between x and y, then
where, k is constant of proportionality.
We know that, proportional relationship passes through the origin because (0,0) satisfy .
For x=0, check which equation has y=0.
In option A, .
In option B, .
In option C, .
In option D,
Only in option C, we have a equation of the form with 4 as constant of proportionality and it passes through (0,0).
Therefore, the correct option is C.
<u>Answer:</u>
The interest rate the bank gave Deonte is 6.5%.
<u>Solution:</u>
Given, Deonte invested 200000 at his bank for 10 years
He earned 130000
We have to find what was the interest rate the bank gave him.
Now we know that, simple interest
So, by substituting our values in above formula,
Interest rate 20000 = 130000
Interest rate 2 = 13
Hence, the interest rate given by bank is 6.5% to Deonte.