Which form of a quadratic equation is best for finding the y-intercept

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Identify the parent function that can be used to graph the function f(x)=3(x-9)2