Given that 22 is not a measured number and 1.4 is a measured number, for which of the following problems does the answer contain 3 significant figures?A.22 multiply by 1.4B.22 divided by 1.4C.22 added to 1.3D. More than one responseE. None of the above

Explanation: We need to find all 3 significant figure answers.

As we have seen that three significant answers is in two of the given option, therefore, the answer is:

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