Kennedy fills the gas tank of the car up before returning it. She puts 14.5 gallons of gas in the car. She pays $2.64 per gallon. How much does she save if the rental company would have charged $3.85 per gallon?

Find total spent on gas for each one:

14.5 x 2.64 = $38.28

14.5 x 3.85 = $55.83

Now subtract:

55.83 - 38.28 = 17.55

She saves $17.55

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11