Please help mee ._. again

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

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

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3