Step by step ! complete the square to write each function in the form f(x)=a(x-h)^2+k. f(x)=3x^2+6x-2

How do you use the elimination method for this question? explain, because i really want to understand!

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?