How do you go from standard to vertex form?

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Determine the fraction of total interest owed. after the fourth month of a 12-month loan: the numerator is: {(n + ) + (n + ) + (n + ) + (n + )} = , and the denominator is: {(n) + (n + 1) + + (n + )} = . therefore, the fraction is numerator/denominator (to the nearest tenth) =