Abag contains 4 red, 5 blue, and 3 black marbles. find the probability that if you pick 3 marbles
without replacement, at least one marble is black.

Find parametric equations for the line. (enter your answers as a comma-separated list of equations. let x, y, and z be functions of t.) the line in the direction of the vector 5 i + 5 j − 6k and through the point (−4, 4, −2).

Cass decided to sell game programs for the hockey game. the printing cost was over 20 cents per program with a selling price of 50 cents each. cass sold all but 50 of the programs, and made a profit of $65. how many programs were printed? letting p represent the number of programs printed, set up an equation that describes this situation. then solve your equation for p.

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.