. For the polynomial function f(x) = -2x^4 + 8x^2 - 8, find all local and global extrema. A: no local extrema exist

B: the only extrema point is (0,-8)

C:no global extrema exist

D: the local and global extrema are: (-/2,0),(0,-8) and (/2,0)

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Which expression is not a polynomial?

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp