
Home > PC > Chapter 6 > Lesson 6.2.3 > Problem 6-103
6-103.
log3(x + 9) − log3x + log552 = 4
log3(x + 9) − log3x + 2 = 4
log3(x + 9) − log3x = 2
x + 9 = 9x
9 = 8x
500(1.15)2x − 1 = 9000
(1.15)2x − 1 = 18
log(1.15)2x − 1 = log18
(2x − 1)log(1.15) = log18
x ≈ 10.82