ANSWER:
[tex]P=(1.239\operatorname{\times}10^5)(1-0.094)^7[/tex]
STEP-BY-STEP EXPLANATION:
An exponential equation has the following general form:
[tex]y=A\cdot(1\pm r)^x[/tex]
Where A is the initial value and r is the rate of change.
In this case the value is 1.239 x 10^5 and r is equal to -9.4%, also x is equal to 7, since it is 7 years later.
Therefore, the equation would be:
[tex]\begin{gathered} P=(1.239\times10^5)(1-9.4\operatorname{\%})^7 \\ \\ P=(1.239\times10^5)(1-0.094)^7 \end{gathered}[/tex]
Therefore, the correct answer is the 1st option.