Can you please help me? ​

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

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

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