Double is double, so you can solve
.. 2 = 1*e^(.08t)
and get the correct value of t.
Taking logs,
.. ln(2) = .08t
.. ln(2)/.08 = t ≈ 8.7 . . . . years
That number is divisible by 6.
Remove the radical by raising each side to the index of the radical.
x=-1
Answer:
128
Step-by-step explanation:
Set this up as a proportion with miles on the top and km on the bottom:

If we want to know how many km are in 80 miles, we put the variable with the km stuff on the bottom and 80 on top and cross multiply to solve for the variable:
so
5x = 640 and
x = 128
That means that 80 miles is equivalent to 128 km
Answer:
(-3, 1)
Step-by-step explanation: