Which function has a vertex at (2, -9)?
O FOC) = -(x – 3)2
Of(a) = (x + 3)2
O f(x) = (x - 5)(x + 1)
O f(x) = -(0 - 1)(x - 5)

i'm sure goog can you get that answer

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of