Ключевые слова: 100, background, bank, banknote, benjamin franklin, bill, brainstorming, budget, bulb, business, cash, commerce, concept, cost, crisis, currency, dollar, economy, electric, electrical, electricity, electricity bulb, energy, environment, environmental, equipment, expense, finance, financial, home, household, hundred, idea, incandescent, innovation, investment, lamp, light, light bulb, lightbulb, modern, money, power, rising, saving, supply, symbol, technology, usa, usd,