algebra - expressions, equation and interpretation

7 less than a number d

• 7 - d
• d - 7

The sum of 6 and x

• x + 6
• 6/x
• x + 4
• 6x

The total of b and 14 

• 14 - b
• 14/b
• 14 + b 
• b - 14 

take 10 away from s 

• 10 - s 
• s + 10
• s - 10
• s/10

Which expression represents "the difference of a number y and 6" ?

Samantha has 3 more than 4 times as many books as Deanna. If Deanna has d books, how many books does Samantha have?

The sum of a number M and 11 

• M  ÷ 11
• M × 11
• M - 11
• M + 11

Kamilah's weight has tripled since her first birthday.  If w represents the amount Kamilah weighed on her first birthday, write an expression to show how much Kamilah weighs now.

• 3k
• w3
• 3w

Marcus has four more dollars than Yaseen.  If y is the amount of money Yaseen has, write an expression to show how much money Marcus has. 

• d + 4 
• y + 4
• 4y

twice h increased by 5

• 2 + h + 5
• h ∙ h + 5
• 5 ∙ h ∙ 2
• 2h + 5