30 = -5(m+6) + m
30 = -5m - 30 + m
0 = -4m
0 = m
X is less than or equal to $30, she can spend $30, she cant spend more, she can spend less.
The answer should look like X<30 with a line under the less than sign, i hope this helps.
Y=mx+b is the formula you use to find the answer