Question

Please help, it's my last question for the night:
Solve 7.7^(4x + 3) = 10.2

Possible answers:

A) x ≈ –2.15
B) x ≈ –0.47
C) x ≈ 0.03
D) x ≈ 0.28

Answer 1

ln10.2/ln7.7-3/4

Answer 2

I don't understand/:

Answer 3

change of base formula
ln10.2/ln7.7 = 4x + 3
subtract 3
and then divide by 4 (:

Answer 4

okay now I get it(: thanks(:

Answer 5

sorry i didnt have a calculator but yeah! glad it's your last question

Answer 6

:D me too! lol