Write Algebraic Expressions

Identify the variables in the expression
3x +  9

• x

• y

• 9

• 3x

Write the expression.
$5 less on dinner than James spent.

• 5 + j 

• j x 5 

• j - 5 

• j ÷ 5 

Evaluate the following expression: 2b + 3
Where b = 7

• 30

• 12

• 17

• 24

Evaluate 4y  if       y = 3

• 7

• 12

Write an algebraic expression for:
6 minus a number

• n - 6

• 6 - n

• 6n

• 6 + n

Twenty decreased by x

• 20+x

• 20/x

• x-20

• 20-x

A(n) ________ is a symbol that stands for one or more numbers

• equality

• variable

• integer

• solution

Sarah is x years old. Her brother is 6 years older than Sarah. Write an expression to represent the age of Sarah's brother.

• x - 6

• x + 6

• 6x

• x ÷ 6

Hayden swam 4 seconds faster than Zachary in the school swim meet. If t represents the time Hayden swam, which expression represents the time that Zachary swam?

• t - 4

• t + 4

• 6t

• 4 - t

Eric has 5 more baseball cards than his sister, Sarah

Choose the correct let statement:

• Let s = the number of baseball cards Sarah has

• Let s= Sarah's cards

• Let e = the number of baseball cards Eric has

• Let e= Eric's cards