Exponents and Algebraic expressions

Which expression represents "twice a number increased by 5"?

• 2x + 5

• 2 + 5x

• 2(x + 5)

• x + 2 + 5

What is 3⁴ equal to?

• 3

• 12

• 81

• 45

In the expression 4x², what is the coefficient?

• 4

• x

• 2

• none

Which expression shows "a number cubed"?

• x(3)

• x³

• 3x

• x + 3

What is 2⁵ equal to?

• 10

• 2

• 42

• 32

In 3y + 2, what is the constant term?

• 3

• y

• 2

• 1

What is the value of 5²?

• 5

• 25

• 125

• 10

Which expression represents "three less than a number"?

• 3 - x

• x - 3

• x + 3

• -3x

What is 2³ equal to?

• 2

• 4

• 6

• 8

In 2x + 5y, what are the terms?

• none

• 2x and 5y

• x and y

• 2 and 5