Rewrite the quadratic function f(x) = x^2 – 4x – 1 in standard form, f(x) = a(z-h)^2 + k, and give the vertex.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

Are the corresponding angles congruent? explain why or why not.