Southeast asia’s three major economic activities include all of the following except a. manufacturing and trade b. herding and livestock c. forestry and lumber d. farming

I would say that herding and livestock would not be a major  economic activity in SE Asia and that logging, farming and manufacturing are important economic activities. For example, farming produces rice and also tea in this part of the world.

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2