Find the 22nd term of the arithmetic sequence whose common difference is d=3 and whose first term is a1= 2

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

Find the simple interest earned to the nearest cent for each principal,interest rate,and time 735 7% and two and a half years

Find the value of x for which line a is parallel to line b