Using the net below, find the surface area of the triangular prism.
3 in.
6 in.
6 in.
6 in.
3 in.
7 in.
Surface Area
[?] in.2
Enter

Having a hard time understanding this question (see attachment).

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Will mark brainliest! ( explain the answer too, it can be one sentence)