Answer:
4sec(4x)
Step-by-step explanation:
#Nova
<u>The </u><u>correct</u><u> </u><u>is </u><u>a </u><u>4</u><u>s</u><u>e</u><u>c</u><u>(</u><u>4</u><u>x</u><u>)</u>
5 and 50
Constant of proportionality=(10-5)/(2-1)=5
Distance is 5*10=50