Anyone lookin for a gf (jk) free points

Do u just plot the numbers on the graph like (1,

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

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.