To find the seventh term of the sequence defined by the explicit formula \( a_n = 4 - 3n \), we need to substitute \( n = 7 \) into the formula:
\[ a_7 = 4 - 3(7) \]
Calculating this:
\[ a_7 = 4 - 21 \] \[ a_7 = -17 \]
Therefore, the seventh term of the sequence is:
\[ a_7 = -17 \]
So the correct response is:
a7=−17