$$a \times a \times a \times \ldots \times a (n $$times)

Question 1

Which of the following is an algebraic expression?

Accepted Answer

$$4x + 7$$

Question 2

Identify the coefficient in the expression $$7x - 4.$$

Accepted Answer

$$7$$

Question 3

Evaluate the algebraic expression $$2x + 5$$ when $$x = 3.$$

Accepted Answer

$$11$$

Question 4

Which of the following is the correct simplification of $$4x + 6 - 3(x + 2)$$?

Accepted Answer

$$x$$

Question 5

If $$x = 4$$ and $$y = -5$$, what is the value of $$2y - x(3 + y)$$?

Accepted Answer

$$6$$

Question 6

Which term in the expression $$5 - x + 3y is a $$constant?

Accepted Answer

$$5$$

Question 7

Simplify the expression $$3x + 14y - 7(x + 2y).$$

Accepted Answer

Question 8

What is the value of $$x(20 - 15y) = |2x + y|$$ when $$x = -3$$ and $$y = 2$$?

Accepted Answer

$$-3$$

Question 9

Which of the following best describes a coefficient?

Accepted Answer

A number multiplying a variable

Question 10

Evaluate $$-3x^2$$ when $$x = 5.$$

Accepted Answer

$$-75$$

Question 11

Which of the following expressions contains only like terms?

Accepted Answer

$$3y + 7y$$

Question 12

What is the simplified form of $$-13 + 4x + x(9 - x)$$?

Accepted Answer

$$-13 + 13x - x^2$

Question 13

Which step should be performed first when evaluating $$2(8 - x)$$ according to PEMDAS?

Accepted Answer

Parentheses

Question 14

If $$a = 4$$ and $$b = 2$$, what is the value of $$a^2$$ + $$b^2$$?

Accepted Answer

$$20$$

Question 15

Which of the following is the general form of an exponent?

Accepted Answer

$$a 	imes a 	imes a 	imes \ldots 	imes a (n $$times)

Question 16

Simplify $$-3(5 - x) + 10 - 7x.$$

Accepted Answer

$$-5 - 4x$$

Question 17

Which of the following is NOT a step in simplifying algebraic expressions?

Accepted Answer

Multiply all terms by zero

Question 18

If $$x = 2$$ and $$y = 4$$, what is the value of $$2x + 5y$$?

Accepted Answer

$$24$$

Question 19

Which of the following is a numerical expression?

Accepted Answer

$$3(4) + 5$$

Question 20

What is the value of $$4^5$$?

Accepted Answer

$$1024$$

Algebraic Expressions: Structure, Evaluation, and Simplification

Guida di studio - Domande di pratica