Compare 9 × (11 – 4) and 3 × (11 – 4). a. 9 × (11 – 4) is three times as much as 3 × (11 – 4). b. 9 × (11 – 4) is nine times as much as 3 × (11 – 4). c. 3 × (11 – 4) is three times as much as 9 × (11 – 4). d. 9 × (11 – 4) is six times as much as 3 × (11 – 4).

A. 9 × (11 – 4) is three times as much as 3 × (11 – 4)

Step-by-step explanation:

9 is 3×3, so we can write the expression involving 9 as ...

... 9 × (11 - 4) = 3 × 3 × (11 - 4)

... = 3 × (3 × (11 -4))

This clearly shows that 9 x ( ) is 3 times as much as 3 × ( ).

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