Answer:
√41
Step-by-step explanation:
Top is the formula, and the bottom would be how to plug in the points.
Start by multiplying the 9 out:
9(-6 + 8y) = -54 + 72y
Then, add the 7:
-54 + 72y + 7
Then simplify the whole thing:
-47 + 72y
Here is the equation to find that answer A=bh+2ls+ib i got it off line if its not right im sory