Solving Literal Equations - Alg II?

Question

I just need a book, but my friend refuses to let me sue it for an hour or two. I need to do this packet so I can get out of the dummy class I am in. It's been 4 years since I had Alg I, I am now in 10th grade. D: These are just literal equations and some other things.

If you know any of these answers, please help me. Please explain work!

V= 1/3hb || For B

V= pir^2h [pi = pie, I can't find the text symble, It's pie times r^2] || For h

M= x(1 + y) || for y

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Sove the compound Inequalities

-5x < 40 and 4(x - 3) < -8

-3x + 2 > 11 or 5(x - 2) < 0

14 - 3x <_ or 5 - 4x _> 12

1/3x + 2 > 3 and -3x > 12

Absolute Inequalites

|10x + 2| - 18 = -12

|3x + 6| > 15

|5x + 2| < 7

|7 - 6x| <_ -4

|1/3x + 2| - 8 > -3

Thank you so much!

Answer 1

V= 1/3hb || For B
b = 3V/h

V= πr²h || For h
h = V/πr²

M= x(1 + y) || for y
y = M/x - 1