Question

Which expression is equivalent to 7 (a 2) when a = 6? 7 (6) 9 (6) 7 (6) 2 7 (6) 14.

Answer 1

The expression 7(6) + 14=56 will be equal to 7(a + 2)  at a = 6

What will be the expression equivalent to 7(a + 2)  at a = 6?

We have an expression  

7(a + 2)  

Now at a = 6, its value will be

7 (6 + 2) = 7 × 8 = 56

Now from the given options we can see that

7 (6)=42

9 (6)=54

7 (6) + 2=44

7(6) + 14 = 42 + 14 = 56

Thus the expression 7(6) + 14=56 will be equal to 7(a + 2)  at a = 6

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