Me plz! i'm to tired to remember how to do this! d':

an expression is shown below:

f(x) = –16x2 + 22x + 3

part a: what are the x-intercepts of the graph of the f(x)? show your work.

part b: is the vertex of the graph of f(x) going to be a maximum or minimum? what are the coordinates of the vertex? justify your answers and show your work.

part c: what are the steps you would use to graph f(x)? justify that you can use the answers obtained in part a and part b to draw the graph.

my
part a: ↓
x-intercept 1: -0.125
x-intercept 2: 1.5

part b: a maximum, duh! the leading coefficient is negative and the degree is even, so the vertex is maximum.

part c:

can you ? i need !