Need help ASAP!

Q1) A sales firm pays their employees an income, I, comprised of a base salary of $3,000 plus a commission of 8% of their total sales (T).

If an employee would like to earn an income, I, of at least $5,200 in a particular month, what amount of total sales, T, would she/he need in that month?

q2) solve the following inequality and growth the solution on a number line.

a) x^2 <= 1 ( less than equal to)

b) x^2 < 9x - 20 ( less than)

q3) solve the equation 2x^2 -8x +5 = 0 by completing the square.