Question

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

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

Answer 1

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.