IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Out of a randomly selected 1200 people from the population, how many of them would have an IQ between 71 and 118, to the nearest whole number?

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

you just switch the numbers basically so it would be 3/17