Question

Brett was given the problem: "Evaluate \(2x^2 + 5\) when \(x = 3\)." Brett wrote that the answer was 41. Was Brett correct?

a) Yes, Brett was correct.
b) No, Brett was incorrect. The correct answer is 23.
c) No, Brett was incorrect. The correct answer is 29.
d) Yes, Brett was correct. The correct answer is 41.

Answer 1

Brett incorrectly evaluated the expression 2x^2 + 5 when x = 3, and the correct answer is 23, not 41.

Step-by-step explanation:

To determine if Brett was correct in evaluating the expression 2x2 + 5 when x = 3, we must substitute the value of 3 into the expression and perform the necessary calculations.

• First, we square the value of x: 32 = 9.
• Next, we multiply the result by 2: 2 × 9 = 18.
• Finally, we add 5 to the product: 18 + 5 = 23.

The correct answer, therefore, is 23. Brett's answer of 41 was incorrect. The correct choice is: b) No, Brett was incorrect. The correct answer is 23.