Basic Algebra

What is the algebraic expression for                  "the sum of n and 9"?

• n - 9
• n + 9
• n/9
• 9n

take 10 away from s 

• 10 - s 
• s + 10
• s - 10
• s/10

six times the number of girls
Let g = number of girls

• 6 + g
• 6g
• g - 6

7 less than a number d

• 7 - d
• d - 7

w lunches at $5 each

• 5w
• 5 + w

How many counters would come next?

• 5
• 7
• 9
• 11

How many blocks will the next term have?

• The next term will have 16 blocks
• The next term will have 15 blocks.
• The next term will have 14 blocks.
• This is the end of the pattern.

The sum of 6 and x

• x + 6
• 6/x
• x + 4
• 6x

take 10 away from s 

• 10 - s 
• s + 10
• s - 10
• s/10

7g + 5 + 6g  - 3

• 13g - 3
• 12g + 5
• 13g + 2
• 13g - 2