7) 6x + 16 + = 2x + 28 8) 12x + 12 = 3x + 84
9) 3+ 6x = 2x + 27
10) 8x + 2 = 72 + x
11) 2x + 20 = x + 60
12) 4x + 1 = 25 + 2x

Ok i'm still not learning this so don't judge.

Step-by-step explanation:

other things to help from paper

which may not help what i did on paper at school.

         Hope this helps  ;)

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true