The quantity q varies inversely with the square of m and directly with the product of r and x. When m is 4 and the product of r and x is 8, q is 2.5. What is the constant of variation?

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

well since the real answer is 8.9 i guess the estimation would be 9