Answer:
9.6
Explanation:
to convert km to miles multiply by 1.609
Convex.
Concave curved inward (like how a cave foes in) and convex curves outward. Reflected and refracted do not apply to a lens.
A=F/m
a=(3000000)/(20000)
a=15 m/s^2
In my opinion, i think the first one is the best one since we're cutting down on paper wasted in mails when its better to do it online.
"paying bills online instead of sending paper through mail"