Mean median and mode for 17,23,8,5,9,22,16,22,11,13,15,17,18

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

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.

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?