Pls help me with this​

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

The sum of two numbers is 86, and their difference is 20. find the two numbers

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.