Quick will mark brainliest!
let f (×)=2/5x^2-2. the function g (x) is a vertical stretch of f (x) by a factor of 2. what is the equation of g (x)?

g(x)=

g(x) = (4/5)x^2 - 2

Step-by-step explanation:

f(x) = (2/5)x^2 - 2 is the equation of a parabola with vertex at (0, -2).

Applying a vertical stretch of factor 2 to f(x) requires multiplying both the slope (2/5) and the y-intercept (-2) by 2:

g(x) = (2)(2/5)x^2 - 4, or

g(x) = (4/5)x^2 - 4.

1) is right

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation: