 # Evaluating a Variable Expression To evaluate a variable expression:

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Evaluating a Variable Expression To evaluate a variable expression:
substitute the given numbers for each variable. use order of operations to solve.

Example # 1 n + (13 - n)  5 for n = 8
= 8 + (13 - 8)  (Substitute.) =  (parentheses) = (Divide l/r.) = (Add l/r.)

Example # 2 8y - 3x2 + 2n for x = 5, y = 2, n =3
= 8    (Substitute.) = 8    (exponents) =   (Multiply l/r.) =  (Multiply l/r.) = (Multiply l/r.) = (Subtract l/r.) = (Add l/r.)

Example # 3: What is the value of -10 – 4x if x = -13?
-62 -42 42 52 Answer Now

Example # 4: What is the value of 5k3 if k = -4?
-8000 -320 -60 320 Answer Now

Example # 5: What is the value of if n = -8, m = 4, and t = 2 ?
10 -10 -6 6 Answer Now

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