Questions: Write an algebraic expression that represents five times the quantity x increased by seven, minus four cubed. (Lesson 1-2)
Transcript text: 3. OPEN RESPONSE Write an algebraic expression that represents five times the quantity $x$ increased by seven, minus four cubed. (Lesson 1-2)
Solution
Solution Steps
To write an algebraic expression for the given problem, we need to follow these steps:
Identify the quantity that needs to be increased by seven, which is \( x \).
Multiply this quantity by five.
Subtract four cubed from the result.
Step 1: Identify the Quantity to be Increased by Seven
We start with the variable \( x \). According to the problem, we need to increase \( x \) by 7. This can be written as:
\[ x + 7 \]
Step 2: Multiply the Result by Five
Next, we need to multiply the quantity \( x + 7 \) by 5. This gives us:
\[ 5(x + 7) \]
Step 3: Subtract Four Cubed
Finally, we subtract \( 4^3 \) from the result obtained in Step 2. Since \( 4^3 = 64 \), the expression becomes:
\[ 5(x + 7) - 64 \]