Bill have paid 60% of the cost of his stereo he has paid $180 how much is his stereo cost

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)