The work of a student to solve a set of equations is shown below:

equation 1: m = 6 + n
equation 2: 2m = 8 + 8n

step 1: −2(m) = −2(6 + n)
2m = 8 + 8n

step 2: −2m = −12 − 2n
2m = 8 + 8n

step 3: −12 − 2n = 8 + 8n

step 4: −20 = 10n

step 5: n = −2

in which step did the student first make an error?
step 2
step 3
step 4
step 5

Idon’t know actually i’m in 5th grade and don’t know

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.