-86/6 is a root of f(x) = x² - 44376. Find the other roots of f(x)

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

If it 8 inch candle burns at 7/10 inch per hour and a 6 inch candle burns at 1/5 inch per hour after how many hours would both candles be the same height

What is the output, or dependent variable of quantity? 1: x 2: f(x) 3: y