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5 votes
Evaluate 2x² - 3x – 4 when x = 5. Round to the nearest whole number.

a. 16
b. 31
c. 46
d. 61

User Zrb
by
7.7k points

1 Answer

4 votes

Final answer:

The expression evaluates to 31 when x = 5.

Step-by-step explanation:

To evaluate the expression 2x² - 3x - 4 when x = 5, we substitute the value of x into the expression:



2(5)² - 3(5) - 4 = 2(25) - 15 - 4 = 50 - 15 - 4 = 31



Rounding to the nearest whole number, the result is 31.



Therefore, the correct answer is option b. 31.

User Jay Bhalani
by
8.7k points

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