How are real numbers used to describe real-world situations?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

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

Tom drove 206 miles in 3.9 hours. estimate his average speed.