You decide you will buy a stock only if it shows an overall increase over the next 30 days. the first 10 days, it has an average daily increase of $0.30. t
he next 10 days, it has an average daily decrease of $0.45. the last 10 days, it has an average daily increase of $0.25.

a. how much did the stock change over the first 10 days? show your work.
b. how much did the stock change over the next 10 days? show your work.
c. how much did the stock change over the last 10 days? show your work.
d. how much did the stock change altogether?
e. should you buy the stock? explain.

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Please don't copy the above answer. It is incorrect and does not show labels for the answers!!

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.