Robin has read 3/4 of a book. mark said he had read 1/2 as much as robin. what fraction of the book has mark read? (show work)

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Aof 12 , we to a of 4 to on a .of 4 be ?

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?