7.5 i think not 100% sure tho
84j is the equivalent.
Just add 36 to 48 and put the j on.
The value of y is, 
We have given that,

We have to determine the value of y,
<h3>What is the formula for the quadratic equation?</h3>

Therefore,we get








Therefore the value of y is,

To learn more about the quadratic equation visit:
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180 times 0.3 would get you the answer. 54 miles would be the answer.
BIANCA DROVE 54 MILES BEFORE LUNCH