What product is shown by the model 50 and 35

Landon wrote that 3−2.6=4. which statement about his answer is true?

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

I'm marking the brainliest and it's 15 points