Estimate a 15% tip on a dinner bill of $87.38 by first rounding the bill amount to the nearest ten dollars.

65.5

Step-by-step explanation:

87.38 * 0.75 = 65.535

And we round it to the nearest 10th

So we get 65.5

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c