Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the syste
2x + y + 4z = 16
5x - 2y + 2z = -1
x + 2y – 32 = -9
a (-1, 2, 22)
c. (-1, 2, 4)
b. (-10, 22, 42)
d (-10, 2, 22)
Please select the best answer from the choices provided

i believe the answer is d.

hope it you! : d

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.