Prosze o pomoc!!! na jutro ale chcialabym odrobic dzis

Find dy/dx using implicit differentiation ln(20+e^xy)=y

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?

Will give a: 122 b: 90 c: 48 d: 180