Find the value of k if the slope of the curve x^3 + kx^2 y - 2y^2 = 0 at the point (-1,1) is -3 .

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

An angle that measures between 90 and 180° is called a(,

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.