Question

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Question 15 of 20:
Select the best answer for the question.
15. If the value of b is 7, then what is
the value of the expression -3b² + 25
= ?
A. 122
O B. -122
O C. 17
D. 172
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Answer 1

The value of the expression -3b² + 25 when b = 7 is -122.

Step-by-step explanation:

To find the value of the expression -3b² + 25 when the value of b is 7, we need to substitute b with 7 in the expression and calculate it. So, (-3(7)²) + 25 = -3(49) + 25 = -147 + 25 = -122. Therefore, the value of the expression is -122.

Learn more about Evaluating expressions