Kayla's score on yesterday's math test was 12 points greater than julianne's score. let k represent kayla's score. write an algebraic expression to represent julianne's score.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Ben frank is an electrician who installs lighting fixtures. he charges (in dollars) his clients 15h+40f15h+40f where hh is the number of hours worked and ff is the number of fixtures installed. how much does ben frank charge when he works 77 hours and installs 99 fixtures?

Me because i don't understand how to do it.: )