. Mrs Cappola borrowed $5760 from a bank at 8.25% per annum simple interest for 9 months. what was the amount he paid to the bank

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?