When you multiply powers with the same base, you sum the exponents:

So, in this case, you have

Answer:


Step-by-step explanation:
Given

Solving (1): k(2)
Take t as 2 such that t = 2
This gives



Solving (2): k(t) = 7
Substitute 7 for k(t)

Add 1 to both sides


Divide both sides by 2


Answer: It would be d,15m