PLEASE HELP!!
1. Calculate the vertex of the quadratic function is standard form:

y=−2x2+8x−3

a. (2, 5)
b. (5, 2)
c. (-2, -27)
d. (2, 12)

2. Calculate the vertex of the quadratic function in vertex form and state if it is a max or min value:

y=−3(x−2)2+4

a. (-2, 4); Maximum
b. (-2, 4); Minimum
c. (2, 4); Maximum
d. (2, 4); Minimum

3. A graph is shown. What is vertex of this function? Is it a maximum or minimum value.

a. (3, 1) - Maximun
b. (1, 3) - Minimum
c. (1, 3) - Maximum
d. (0, 2) - Minimum