Question $7$

Suppose the following values are correct:

${\displaystyle \underset{1}{\overset{5}{}}}f(x)dx=7$ and ${\displaystyle \underset{1}{\overset{9}{}}}f(x)dx=-13$

Find ${\displaystyle \underset{9}{\overset{5}{}}}f(x)dx$

$-20$

$6$

$-6$

$20$