Final answer:
To evaluate the expression 5+9(x-3)² for x=9, you substitute 9 for x and follow the steps of simplification. After substitution and simplification, the final result is 329.
Step-by-step explanation:
The expression to evaluate is 5+9(x−3)² for x=9. To solve this, we substitute the value of x and then simplify the expression step by step.
First, substitute x=9 into the expression:
5+9((9−3)²) = 5+9(6²) = 5+9(36)
Now, multiply 9 by 36:
5+324
Finally, add 5 to the product:
5+324 = 329
Therefore, 5+9(x−3)² equals 329 when x=9, which is not among the options provided in the question.