Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function: y=4x^2-8x-3

a. x= -1; vertex: (-1,9)
b. x= 1; vertex: (1,-7)
c. x= 1; vertex: (1,-11)
d. x= -1; vertex: (-1,-7)

25/4

step-by-step explanation:

call segment cd's length x. because dc and ab are parallel, angle acd and cab, so triangles adc and abc are similar and we can set up the equation x / ac = ac / ab, or x / 5 = 5 / 4 and x = 25/4.

i really dont know

step-by-step explanation:

using pemdas, (order of operations) you'll see the answer is 24.