There are 19 students in a class. The teacher needs the students to elect a student for each of the following positions: president, Vice President, secretary, and treasurer. What is the probability that you guess, at random, who is picked for each position correct?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.