Question

Solve 25 = 5^x − 4
A. 1/2
B. 2
C. 4
D. 6

Answer 1

Here is how to do this problem:

5^x - 4 = 25

+4 +4

5^x = 29

og(5x)=log(29)(Take log of both sides)

x*(log(5))=log(29)

x=log(29) / log(5)

x=2.092219 or

x = 2

So, the answer is B

Answer 2

Rounding: 2

Exact: 2.09221853...

Explanation:

Math-way