Question

solve ln(5x+7) =8

Answer 1

convert to exponential form

Answer 2

don't know what that is.

Answer 3

thats why i need help. i don't know how to solve this.

Answer 4

base(e) raised to log of the number(8)=number(5x+7)

Answer 5

that will be:
e^8=5x+7

Answer 6

okay. is that the answer?

Answer 7

no you still have to simplify this, of course

Answer 8

oh. how do i simplify that? what is e stand for.. im lost then.

Answer 9

alrright i'll give you the answer. please use this as reference and next time read your book. it's all in the book ☺

5x=e^8-7
x=(e^8-7)/5
x≈594.792

there you go ☺

Answer 10

are you allowed to use calculator?

Answer 11

my book is at my grandmas and i couldn't remember how to do this. thanks.