Question

PLEASE HELP!! Solve the exponential equation for x.

Answer 1

B

Explanation:

given 625 =
`5^((7x-3))`

note that 625 =
`5^(4)`, hence

`5^(4)` =
`5^(7x-3)`

Since bases on both sides of the equation are equal then we can equate the exponents, hence

7x - 3 = 4 ( add 3 to both sides )

7x = 7 ( divide both sides by 7 )

x = 1 → B