Final answer:
To evaluate the expression 3m - 2 + 8k, substitute the given values for m and k and simplify the expression.
Step-by-step explanation:
To evaluate the expression 3m - 2 + 8k, we substitute the given values for m and k. Since m = 7 and k = -2, we replace m with 7 and k with -2 in the expression. This gives us:
3(7) - 2 + 8(-2)
Simplifying this expression, we get:
21 - 2 - 16
Which further simplifies to:
3
So, when m = 7 and k = -2, the value of the expression 3m - 2 + 8k is 3.
Learn more about Evaluating expressions