(-4) x something =320

Can someone tell me if this is perpendicular? !

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10

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?