in a theater, the first row has 17 seats and each row has 3 more seats than previous row. if the last row has 44 seats, what is the total number of seats in the theater?
Choose the most appropriate option:
A) 265
B) 275
C) 285
D) 295
E) 305
<gadget id="calculator">17 + 44</gadget>
<output>61</output>

<gadget id="calculator">61 / 2</gadget>
<output>61/2 = around 30.5</output>

<gadget id="calculator">44 - 17</gadget>
<output>27</output>

<gadget id="calculator">27 + 3</gadget>
<output>30</output>

<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">(61/2) * 10</gadget>
<output>305</output>

<result>E</result>
in a theater, the first row has 17 seats and each row has 3 more seats than previous row. if the last row has 44 seats, what is the total number of seats in the theater?
multiply(divide(add(17, 44), const_2), divide(add(subtract(44, 17), 3), 3))
"the number of seats in the theater is 17 + ( 17 + 3 ) + . . . + ( 17 + 27 ) = 10 ( 17 ) + 3 ( 1 + 2 + . . . + 9 ) = 10 ( 17 ) + 3 ( 9 ) ( 10 ) / 2 = 170 + 135 = 305 the answer is e ."