Which of the following equations has only one solution?

x^2 - 1 = 0

x^2 + x = 0

x^2 + 4x + 4 = 0

What are the next 4 multiples after 1/2

What is the slope of tne line to 4x+6y=12

How to add how to a negative and a negative

CD player: $120, 20% markup (show work)

Jerry buys a pack of pencils a call's $3 David baas for set some markers each set of markers also cost $3

Write an equation for a rational function with the given characteristics. Vertical asymptote at x = 4, double zero at x = 1, y-intercept at (0, 3) y =

A science teacher has a supply of 20% saline solution and a supply of 50% saline solution. How much of each solution should the teacher mix together to get 60 ML of 28% saline solution for an experiment

There goes my hopes for Virtuoso rank ... What are the zeros of the function y = x2 + 10x - 171, and why?

Which is greatest ... 63 of 100, 60% of 80, 3/5 of 85,

John can eat 10 hot dogs in 4 mins. At this rate, how many hot dogs can he eat in 18 mins?