Answer: the last pos term is 3
Details:
213
207
201
195
189
183
177
171
165
159
153
147
141
135
129
123
117
111
105
99
93
87
81
75
69
63
57
51
45
39
33
27
21
15
9
3
-3
We know that
1 ft-----------> 0.3048 m
then
1 ft²---------> (0.3048)²------> 0.092903 m²
so
121 ft²----------> 121*0.092903----------> 11.24 m²
the answer is
11.24 m²
The Answer should be 7.5
If you would like me to elaborate, let me know