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What is the value of this expression when n=-15?

-2 l n+6 l

A. -42
B. -18
C. 18
D. 42

1 Answer

4 votes

To evaluate this expression when n = -15, we simply substitute that value for n into the expression:

-2 l (-15)+6 l

= (2*(-15)) + 6l (multipling -2 and -15)

= 30 + 6l

Therefore, the value of the expression when n = -15 is 30 + 6l, which matches option B: -18.

The steps are:

The expression is: -2 l n + 6 l

We're told n = -15

Substitute -15 for n:

-2 l (-15) + 6 l

Simplify:

2*(-15) + 6l

Evaluate:

30 + 6l

So the value is -18, which is option B.

The key here is simply substituting the given value for n into the expression and then simplifying. Be careful not to choose an answer that does not account for the l term in the expression.

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