Identify the Variable

For a fundraiser students sell calendars and posters. Calendars are $3 each and posters are $2 each. At the end of the fundraiser, they raised $100 and sold a total of 25 items. Identify the two variables.

• # of calendars sold

• # of posters sold

• 2

• 3

• total cost

Identify the 2 variables.

• # of small glasses sold

• # of large glasses sold

• 29 total glasses

• cost per glass

Pablo and his brother got 6 tacos and 2 drinks for $9. Jasmin and her brother got 4 tacos and 2 drinks for $7. They're wondering if they have enough information to figure out the cost of 1 drink and 1 taco. Identify the two unknown quantities (aka variables).

• cost of 1 drink

• cost of 1 taco

• # of tacos purchased

• # of drinks purchased

What is the variable in this problem?
An aquarium contains red, blue, and green fish. There are 200 fish in total. There are 125 red and green fish combined. How many blue fish are there?

• The number of blue fish.

• The number of fish in total.

• The number of red and green fish combined.

• The number of fish colors.

Identify the variable of the algebraic expression:

m - 6

• 1

• m

• -6

• 6

Identify the variable of the algebraic expression:

3x + 5

• 3

• x

• 5

• 3x and 5

What are the variables in the expression?
-4x + 6y - 2

• -4x, 6y, -2

• x, y

• 4x, 6y

• -2

What is the variable in 4x+3

• 3

• 4x

• 4x+3

• x

What are the variables in the expression?
4 + 16v

• 4, 16v

• 4

• v

• +16

What is the variable in this problem?
There are 30 students in Mrs. Johnson's 2nd grade class. 14 of them are boys. How many students are girls?

• The number of girls.

• The number of boys.

• The total number of students in the class.

• The grade of the class.