Question 1

Which of the following is an example of a numerical expression?

Accepted Answer

$$2 	imes 3 + 5$$

Question 2

Which part of the expression $$5y - 9 is $$the constant?

Accepted Answer

$$-9$$

Question 3

What distinguishes an algebraic expression from a numerical expression?

Accepted Answer

Algebraic expressions contain variables, while numerical expressions do not.

Question 4

In the expression $$3a + 2b + 7$$, which term is a constant?

Accepted Answer

$$7$$

Question 5

If $$x$$ represents the number of hours worked and $$15x + 50$$ represents total weekly earnings, what does the $$50$$ represent?

Accepted Answer

A fixed bonus or constant

Question 6

Which of the following best describes the coefficient in the expression $$-8z + 3$$?

Accepted Answer

$$-8$$

Question 7

Given the expression $$4x + 6$$, if $$x = 2$$, what is the value of the expression?

Accepted Answer

$$14$$

Question 8

Which of the following is NOT a characteristic of a constant in an algebraic expression?

Accepted Answer

It multiplies a variable.

Question 9

A company charges a flat fee of $$20 plus 5$ per mile for delivery. Which algebraic expression represents the total cost for m$ miles?

Accepted Answer

$$5m + 20$$

Question 10

In the expression $$2x + 3y + 4$$, how many terms are there?

Accepted Answer

$$3$$

Question 11

Which of the following expressions is algebraic?

Accepted Answer

$$x + 5$$

Question 12

If the coefficient in $$kx + 9 is $$doubled and the constant is halved, what is the new expression?

Accepted Answer

$$2kx + 4.5$$

Question 13

Which of the following best describes the variable in the expression $$12p - 5$$?

Accepted Answer

A letter representing a value that can change

Question 14

A scientist records the temperature $$T in $$degrees Celsius as $$T = 3h + 2$$, where $$h is $$the number of hours after noon. What is the coefficient in this expression?

Accepted Answer

$$3$$

Numerical and Algebraic Expressions: Foundations of Algebra public -29th june

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