Question

1086=1.045^x×700 find the value of x

Answer 1

Answer:

For:

3n=81

Take the log of both sides:

log3n=log81

By identity we get:

n⋅log3=log81

Dividing both sides by log 3:

n=log81log3

Using a calculator we can find that log 81 ≈ 1.9085 and log 3 ≈ 0.4771 then our equation becomes:

n=log81log3≈1.90850.4771≈4

Checking our answer 34 = 81.