Evaluate 3+ the square root of x+7-the square root of 3x when x =9

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This is the equation:

Simply substitute 9 into wherever you see 'x'

The answer you get is:

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- Hannah ❤

12 pack of pens for $1.09

m packs =  1.09*m = 1.09m

1 composition book = $2.79

n composition books = 2.79*n = 2.79n

Total cost = (1.09m + 2.79n)

Since there is a discount of 5%, the net price would be: 100% - 5% = 95%

Net Cost = 0.95*(1.09m + 2.79n)

Cindy's bill =    $ 0.95*(1.09m + 2.79n)