What is the justification for each step in the solution of the equation 3(2x + 7) - 4 = 53 - 3x? step 1: 3(2x + 7) - 4 = 53 - 3x step 2: 6x + 21 - 4 = 53 - 3x step 3: 6x + 17 = 53 - 3x step 4: 9x + 17 = 53 step 5: 9x = 36 step 6: x = 4

1010: 3030

is it i think

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