Y varies directly as the square of x. If y=45 and x=3, find y if x=4.

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?