Jose and a group of friends bought concert tickets for $257. the booking agency also charged a fee, bringing the total cost to $274.99. the amount of change is $17.99. what is the percent increase in the cost due to the fee? 6% 7% 8% 9%

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?