Hey please help me with math (who doesn't know Latvian here is translation on what's asked: Division into square trinomial multipliers (if possible))​

If a boat travels 3 miles in 1.5 hours how far will it travel in 2 hours?

Cherie measures and records the lengths and sizes of the same style of a sandal found at a shoe store. which equation can be used to determine the approximate shoe size, s, for a foot length of x inches? s = x – 2 s = 2x – 10 s = x + 6 s = 2x + 4

Ineed with number 6 , explain how to get 1978