We were given the distance, d as a function of time, t.
[tex]d(t)=300,000t[/tex].
To find [tex]d(15)[/tex], we put [tex]t=15[/tex], in to
[tex]d(t)=300,000t[/tex]
This implies that,
[tex]d(15)=300,000(15)[/tex]
[tex]d(15)=4,500,000[/tex]
This means that in 15 seconds light covers a distance of 4,500,000 kilometers
Answer:
[tex]d(15)=4,500,000[/tex] kilometers
Step-by-step explanation:
The distance traversed by a beam of light is represented as a function of time:
[tex]d(t)=300,000 t[/tex]
This function represents distance traveled by the light in 't' seconds.
Now d(15) means, how much distance will the light beam cover in 15 seconds.
Putting t=15 in the function will tell us the distance traveled by light in 15 seconds.
[tex]d(15)= 300,000 \times t=300,000\times 15=4,500,000[/tex]
So basically light has traveled, 4.5 million kilometers in 15 seconds.
