Q
What is the solution to the equation 3(x + 4) = 21 in algebra?

Answer & Solution

Answer: Option B
Solution:
To solve the equation 3(x + 4) = 21, first distribute the 3: 3x + 12 = 21, then solve for x: 3x = 9, x = 3.
Related Questions on Average

Which of the following is a valid algebraic identity?

A). (x + y)^2 = x^2 + y^2

B). (x + y)(x - y) = x^2 + y^2

C). (x + y)^2 = x^2 - y^2

D). x^2 - y^2 = (x + y)^2

What is the degree of the polynomial 4x^3 + 2x^2 - x + 7?

A). 1

B). 2

C). 3

D). 4

Which of the following is an example of a linear equation in algebra?

A). 3x^2 + 5 = 0

B). y = mx + b

C). (x + 2)(x - 3) = 0

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What is the correct order of operations in algebraic expressions?

A). Parentheses, Exponents, Multiplication/Division, Addition/Subtraction

B). Exponents, Parentheses, Addition/Subtraction, Multiplication/Division

C). Multiplication/Division, Exponents, Addition/Subtraction, Parentheses

D). Addition/Subtraction, Multiplication/Division, Exponents, Parentheses

What does the term 'factor' mean in algebra?

A). To break down an expression into simpler parts

B). To multiply two or more terms

C). To add terms together

D). To rearrange terms in an equation

In algebraic expressions, what does the term 'coefficient' refer to?

A). The constant part of the expression

B). The highest power of a variable

C). The number in front of a variable

D). The solution to the equation

Which property allows you to multiply a sum by distributing the multiplication over each term?

A). Distributive property

B). Commutative property

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Which of the following is a quadratic equation in algebra?

A). 3x - 5 = 0

B). y = mx + b

C). x^2 + 2x + 1 = 0

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In algebraic expressions, what does the term 'exponent' represent?

A). The number being multiplied

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What is the solution to the equation x^2 - 4 = 0 in algebra?

A). x = -2

B). x = 2

C). x = -4

D). x = 4