After taking 3 of 4 exams in math class, Saniah has an average exam score of 66 points. If the 4th exam counts twice as much as the other exams, what s the fewest points that Saniah can score on the 4th exam to pass the course with an overall average of 70 points?

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

addition

step-by-step explanation:

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