Pls Select all the correct answers. It's more than one answer. + Brainliest for first

What refers to the distance between two sound frequencies or pitches?

Which describes which ctso each student should join? eleanor should join nyfea, russell should join fea, giada should join tsa, and joe should join hosa. eleanor should join fbla-pbl, russell should join ffa, giada should join fea, and joe should join fccla. eleanor should join ffa, russell should join deca, giada should join nyfea, and joe should join hosa. eleanor should join fbla-pbl, russell should join deca, giada should join tsa, and joe should join fccla.

What is 1315×5[tex]1315 \times 5 \\ [/tex]