Albert thought of a number, added 5, multiplied the result by 2, took away 6 and then divided by 2 to give an answer of 8

The number that Albert thought of was 6.   This exercise is solved by the crab method, which is applied when the initial quantity is not known, there are several successive operations and the final quantity is known. To solve the inverse operations must be made to those that arise in the problem starting from the end to the beginning.

x    + 5     x2       -6       / 2        8

6      -5      / 2       +6       x2       8        

a. protestors wrote narrative about vietnam that run counter to veterans own stories

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.