Question 1

Which of the following is equivalent to \( 3(x + 4) - 2x \)?

• A \( x + 4 \)
• B \( x + 12 \)
• C \( 3x + 2 \)
• D \( 5x + 4 \)

🔒 Answer question 1 to unlock

Which expression is equivalent to \( (2x)(3x^2) \)?

• A \( 6x^2 \)
• B \( 6x^5 \)
• C \( 6x^3 \)
• D \( 5x^3 \)

🔒 Answer question 2 to unlock

A rectangular garden has a length of \( (x + 5) \) feet and a width of 2 feet. Which expression represents the area of the garden in square feet?

• A \( 2x + 10 \)
• B \( 2x + 7 \)
• C \( 2x + 5 \)
• D \( x + 7 \)

🔒 Answer question 3 to unlock

Which of the following is equivalent to \( x^2 - 9 \)?

• A \( (x - 3)(x - 3) \)
• B \( (x - 9)(x + 1) \)
• C \( (x + 9)(x - 1) \)
• D \( (x + 3)(x - 3) \)

🔒 Answer question 4 to unlock

A store sells t-shirts for $12 each and charges a flat shipping fee of $5 per order. If a customer orders \( t \) shirts, which expression represents the total cost in dollars?

• A \( 17t \)
• B \( 12t - 5 \)
• C \( 12t + 5 \)
• D \( 5t + 12 \)

🔒 Answer question 5 to unlock

Which expression is equivalent to \( (4x^3)^2 \)?

• A \( 8x^6 \)
• B \( 16x^5 \)
• C \( 16x^6 \)
• D \( 4x^6 \)

🔒 Answer question 6 to unlock

Which of the following is equivalent to \( 5x - 3(2x - 4) \)?

• A \( -x + 4 \)
• B \( 11x - 12 \)
• C \( -x + 12 \)
• D \( -x - 12 \)

🔒 Answer question 7 to unlock

A population of bacteria doubles every hour. If the population starts at 500, which expression gives the population after \( h \) hours?

• A \( 500 + 2^h \)
• B \( 500(2h) \)
• C \( 500(2^h) \)
• D \( 1000h \)

🔒 Answer question 8 to unlock

Which of the following is equivalent to \( (x + 2)^2 \)?

• A \( x^2 + 2x + 4 \)
• B \( x^2 + 4x + 4 \)
• C \( x^2 + 4 \)
• D \( 2x^2 + 4 \)

🔒 Answer question 9 to unlock

A scientist measures the mass of a sample as \( 3a^2b \) grams. If she splits the sample into 3 equal portions, which expression represents the mass of one portion in grams?

• A \( 3ab \)
• B \( \frac{a^2b}{3} \)
• C \( a^2b \)
• D \( 3a^2b \)