Given the followingfunction, (a) find thevertex; (b) determine whether there is a maximum or a minimumvalue, and find thevalue; (c) find therange; and(d) find the intervals on which the function is increasing and the intervals on which the function is decreasing.

f(x)=-8x²-8x+5

(a) The vertex is

(b) Determine whether the parabola has a maximum value or a minimum value and find the value.

(c) What is the range off(x)?

(d) On what interval is the functionincreasing?

On what interval is the functiondecreasing?