Helen is solving a quadratic equation. She wants to find the value of x by taking the square root of both sides of the equation. Which equation allows her to do this?

1) x^2+ 24x + 144 = 17
2) x^2 + 7x + 12 = 34
3) x^2+ 7x + 49 = 10
4) x^2+ 25x + 10 = 20

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

3x + 4y = 5 x- 3y = -7 solve by substitution