Question

Need help. Please see link. http://picturepush.com/public/12230069

Answer 1

the third one is the sum of the first two

Answer 2

\[\int_{-2}^{6}h(t)dt=3+-9=-3 \]\[\int_{6}^{-2}h(t)dt=-\int_{-2}^{6}h(t)dt=-(-3)=+3\]