B Beacuse b best fits the situation
0.800 rounded to the nearest tenth is0.8
84 x .70 = $58.80
Or if you want to do it the long way you can calculate the actual discount (your savings from this purchase first then subtract it from the original price of $84. It`s just easier to figure out what is left (which is 70% of $84).
Two lines intersect in one point.
<span>x + (x + 1)
.............
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