Dolores and four friends went to a buffet
dinner. the total cost was at most $130
including the $20 tip they left. how much did
each pay for the buffet?

Find the value of x for which abcd must be a parallelogram -9-6x x-30

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.