if
21=3
32=7
82=22
92=25
than
72=?  Choose the correct answer
A) 17
B) 19
C) 21
D) 23
E) 25
(2*1)+(2-1)= 
<gadget id="calculator">(2*1)+(2-1)</gadget>
<output>3</output>
3   (3*2)+(3-2)= 
<gadget id="calculator">(3*2)+(3-2)</gadget>
<output>7</output>
7   (8*2)+(8-2)= 
<gadget id="calculator">(8*2)+(8-2)</gadget>
<output>22</output>
22   (9*2)+(9-2)= 
<gadget id="calculator">(9*2)+(9-2)</gadget>
<output>25</output>
25   (7*2)+(7-2)= 
<gadget id="calculator">(7*2)+(7-2)</gadget>
<output>19</output>
19   ANSWER:19
<result>B</result>
if
21=3
32=7
82=22
92=25
than
72=?