Help me out it’s important thank you

When you answer this can you explain

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?

Which statement about 6x2 + 7x – 10 is true?