Evaluating Algebraic Expressions

What are the coefficients in the expression
8a + b + 9?

• 8 only

• 1 and 8

• 8 and 9

• 1, 8, and 9

Translate from English to math: 3 less than y

• 3-y

• y-3

• y/3

• 3y

A website charges $0.99 to download a game and $12.49 membership fee. Write an expression that gives the total cost in dollars to download "g" games.

• 12.49g+0.99

• 0.99g+12.49

• 0.99+12.49

• g+12.49+0.99

Evaluate the expression:

4w - 3y if w = 7 and y = 6

• 24

• 21

• 10

• 46

Evaluate the expression:

3b + 4c if b = 9 and c = 3

• 27

• 12

• 15

• 39

Evaluate y - 17 if y = 28.

• 11

• 17

• 27

• 28

Evaluate 3m if m = 4.

• 3

• 5

• 12

• 15

6a - 3d
when a = 1, d = 2

• 3

• 12

• 1

• 0

Evaluate the expression:

3d if d = 5

• 3

• 5

• 12

• 15

Evaluate the expression:

2 + m if m = 7

• 5

• 27

• 9

• 72