Omar classroom has 2 closets .each closet has 3 shelves. there are 5 backpack on each self how many backpack are there in all?

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Ithink i know it but i want to be sure so can you me out ?

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?