Janine used the calculations shown to determine how much she would spend on 245 pencils. 3,600 pencils cost 72 dollars. (StartFraction 72 dollars Over 3,600 EndFraction) (StartFraction question mark Over 1 EndFraction) What is her error? She placed the decimal point incorrectly when dividing. She placed the decimal point incorrectly when multiplying. She wrote the rate incorrectly. She did not make an error.

answer:

a=9

step-by-step explanation: lmk if you need a explanation

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