You just need to know that all sides need to have the same measurement because it is a equilateral triangle.
The x axis is the one going this way : ——— the y is the opposite going up so you just have to number it and add the dots
To find your answer you must substitute y for 0.8
4x + (8)(0.8) = 40
Now solve for x
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SOLVING...
<span>4x + (8)(0.8) = 40
</span><span>4x + 6.4 </span>= <span>40
</span>
Subtract 6.4 from each side
<span><span><span>4x</span>+ 6.4 </span>− 6.4 </span>= <span>40 − <span>6.4
</span></span>4x = 33.6
Divide each side by 4
4x ÷ 4 = 33.6 ÷ 4
x = 8.4
A) 38*(1-20%)*(1-10%)=27.36
b)38*(1-30%)=26.6
c)Because in question one when you take off the 10% it is 10% of the already off price but when you take off 30% it is taking off from the original price
