Sacha buys a computer costing $1470 on her credit card. Her bank offers a 30-day statement period and then a further 10 days interest free. After that time, the bank
charges interest at a rate of 18.5% per annum compounding daily.
Sacha makes the purchase on 10 January, which is day 12 of her statement period. She
intends to pay off the credit card on 1 March. At this date, how much will she need to
pay back? (Assume no interest is payable on the last day).

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? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.