Please help it’s done tonight and i need a answer because i can’t figure it out:( pls help!

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

If wxyz is a square, which statements must be true?

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.