Which function represents g(x) , a reflection of f(x)= 2/5 (10) x across the x-axis ?

The correct option is  A.

Explanation:

The given function is,

If a function is reflect across the x-axis, then the x-coordinate remains the same but the sign of y coordinate change.

The graph of f(x) and g(x) in shown in below figure.

Therefore option A is correct.

yes

step-by-step explanation:

yes

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c