Question

Power Function:
Analyze and model the power function: Exercise 2

Answer 1

Given function:

• f(x) = 2.8x²

A. The domain is all positive integers (number of people can't be negative), so as the range.

B. x = 19.2

• f(19.2) = 2.8(19.2)² = 1032.192 tons

C. f(x) = 655432

• 2.8x² = 655432
• x² = 655432 /2.8
• x² = 234082.857143
• x = √234082.857143
• x = 483.821100349 million

D. x = 7530

• f(7530) = 2.8(7530)² = 158762520 tons