Find all complex solutions for the equation x2 = 4x - 29.
a.{-2, 2i}
b.{-5i, 5i}
c.{2 - 5i, 2 + 5i}
d.{7 - 5i, 7 + 5i}

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?