Plz plz i need help i do not get it plz plz for all questions

What are the steps to solving the inequality 3b + 8 ≥ 14?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?