Hi how's everyone doing just a question

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?