Subtract 2x^2-5x+8 from 6x^2+3x-2 and express the numbers in trinomial

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?

What is the value of x in the equation 1/5x - 2/3y = 30 , when y = 15