Answer:

Step-by-step explanation:
Arranging the given equation in slope-intercept form ( y = mx + b ):

<em>We know that the perpendicular line would have a slope (m) that is </em><em>negative reciprocal </em><em>of this (
). Thus we can write the perpendicular line's equation as
. </em>
<em />
<em>Now putting x = 4 and y = -6 into the equation, we can solve for b:</em>
<em>
</em>
<em />
Thus, the equation of the perpendicular line is 
One way is just multiplying it vertically like
754
x 4
---------
3016
Or multiply it by place value like
700 x 4 = 2800
50 x 4 = 200
4 x 4 = 16
Then add all the answers together
The original selling price is found by multiplying 100% by $10 and adding that to the original $10. The logo shirt goes on the sale floor for $20. Each of the next three months, the reduced price is found by multiplying the current sale price by 75%. The tax is found by multiplying 5% by the final discounted price and adding the tax to the final sale price.
Her total should be 84. You have your 30 dollars that will not change which you need to add to the amount of every visit. To find the amount for each time she went you have to do 3*18 because she went 18 times for 3 dollars each. Your answer to 3*18 should be 54. You now have to add those 54 to the 30 per month. 30+54. That should be 84