I need some more help

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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.

Find the domain and range of the following function f(x) = 51x - 21+ 4