Question
What is the value of the expression below when \( z=3 \) ? \[ 10 z^{2}+7 z+4 \]
Ask by Olson Summers. in the United States
Mar 12,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
When \( z=3 \), the expression \( 10 z^{2}+7 z+4 \) equals 115.
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To find the value of the expression \( 10 z^{2}+7 z+4 \) when \( z=3 \), we simply substitute \( z \) with \( 3 \). First, calculate \( z^2 \): \[ z^2 = 3^2 = 9 \] Now substitute \( z \) in the expression: \[ 10(9) + 7(3) + 4 \] Calculating each term: \[ 10(9) = 90 \] \[ 7(3) = 21 \] Now, adding them together: \[ 90 + 21 + 4 = 115 \] Thus, the value of the expression when \( z=3 \) is \( 115 \).
