The largest 4 digit number is?​

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

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth