Brent went for a bicycle ride the clocks show his start time and his end time how long did brent ride his bicycle

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

What is a graph with a never ending line called?

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance