Hello :) please help me. I don't really understand

Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?