Expressions Substitutions

8a + 3a

• 11a

• 5a

• 11

• a

Which expression is equivalent to -5(x + 10)?

• 5x + 50

• -5x + 10

• -50 - 5x

• 5x - 50

Simplify: 6x + 2m

when x = 10 and m = (-9)

• 42

• -66

• 102

• 13

Evaluate: 10 - (3h + 2) for h = 3

Mathematical Equivalence

ON

If a = 6 and b = 3, evaluate the following expression:

ab

• 63

• 18

• 9

• 216

If a = 6 and b = 3, evaluate the following expression:

a(-b)

• -18

• 18

• -63

• -9

If a = 6 and b = 3, evaluate the following expression:

a + b

• 18

• 63

• 3

• 9

If a = 6 and b = 3, evaluate the following expression:

-a + -b

• 63

• -9

• 18

• 216

If a = 6 and b = 3, evaluate the following expression:

• 1/2

• 2

• 36

• 12

If a = 6 and b = 3, evaluate the following expression:

• -2

• 2

• -1/2

• -23