Can someone help me

Which letters from the table represent like terms? a and b b and c a and d b and d

Yolanda wanted to buy a total of 6 pounds of mixed nuts and dried fruit for a party she paid 21.60 for mixed nuts and 11.90 for dried fruit did yolanda but enough mixed nuts and dried fruit for the party

In the triangle rst, rs = 65 and st = 60. which equation could be used to find the value of angle s?