In an objective test containing 50 questions, a student is to be awarded + 3 marks for every correct answer, 2 for every incorrect answers 0 for not supplying any answers. If Samir had 30 correct answer 5 questions were left to supply any answer. Find the marks secured by him in this test. (Ans:60) (Please help to solve this word problem step by step)

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation