Expressions Terms and Variables

What are the constants in the following expressions?
15n - 4

• -4

• 4

• 15, -4

• n

Which of the following answer choices is NOT an example of a variable?

• 8

• x

• u

• n

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

• 4, 16v

• 4

• 16

• +16

What are the coefficients in the following expressions?
15n - 4

• 15n, -4

• 15

• 15, -4

• n

b² + 4
when b = 3

• 10

• 12

• 13

• 11

y + z²

when y = 5 and z = 2

• 7

• 9

• 29

• 14

a + c - b

when a = 2, b = 1, c = 9

• 4

• 14

• 10

• 8

What are the letters called that we use to represent numbers?

• operations

• expressions

• variables

• terms