What is the probability of getting 3 answers correct on an 18 question true or false test

3x = 729 solve for x plz . it's urgent. will mark

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

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?