Answer:
<em><u>x = 5/4</u></em>
Step-by-step explanation:
9x-7 = -3x+8 ||| that's how the equation is.
12x = 15 ||| expand and stuff
<em><u>x = 5/4</u></em> ||| Solve
It seems to me, that if you were to add the price of all three items together, then multiply by 7.5%, you'd have the answer. Remember that 7.5% = .075 ... in other words, that is the number you would multiply the sum of the items by. Does that help?
Answer:
60%
Step-by-step explanation:
add them all to 20
add 7 and 5 to get 12
12 over 20 is 60 percent
:
Since
, we get:

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We have
simplify 
then the radical rule is used: ![\quad \sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b}](https://tex.z-dn.net/?f=%5Cquad%20%5Csqrt%5Bn%5D%7Bab%7D%3D%5Csqrt%5Bn%5D%7Ba%7D%5Csqrt%5Bn%5D%7Bb%7D)
⇒ 
Now we have
and 

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and 

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since
is the half of 
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<em>(-4+5=1)</em>
Answer:

Step-by-step explanation:
Given

on Sales over 50000
Required
Determine the function j(s) for sales over 50000
Represent the total sales in a month with s.
Sales over 50000 in that month will be: s - 50000
So, the function j(s) is:
j(s) = Base Amount + Commission * Sales over 50000

Convert % to decimal

Open bracket


Collect Like Terms

