Valentina bicycle while she was on vacation she paid a flat rental fee of $55 plus 8.50 a check the total cost was $123 write an equation that you can use to find the number of rotation into the bicycle

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?