The cost to a store for a box of cereal is $2.50. the store is selling the box of cereal for $3.50. what is the percent of markup? pls show work thx : )

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