4
QuizMultiple Choice

Expanding Expressions — Quiz

Question 4 • Grade 7 Mathematics

When 0 point 3 times open paren 4 x minus 8 close paren minus 0 point 5 times open paren negative 2 point 4 x plus 4 close paren is simplified, what is the resulting expression?

Answer
A
1 point 2 x minus 2 point 4 plus 1 point 2 x minus 2
B
2 point 4 x minus 0 point 4
C
2 point 4 x minus 4 point 4
D
negative 4 point 4

Explanation

Distribute first: 0.3(4x − 8) = 1.2x − 2.4. The second product is 0.5(−2.4x + 4) = −1.2x + 2, and subtracting it gives +1.2x − 2. Combining like terms yields 2.4x − 4.4, which is choice C.

AI-written and checked against the verified answer.

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