Question

Solve 2x + 3 = 7

Answer 1

x=2

Answer 2

2^x sorry

Answer 3

x=2 or -2

Answer 4

sorry 2

Answer 5

not negative 2...

Answer 6

2^(x+3)=7

Answer 7

lol

Answer 8

I don't logs.. :/ I'm screwed for my test..

Answer 9

don't get..*

Answer 10

Take the ln() of both sides, to obtain (x+3)ln(2)=ln(7). You can solve from here.

Answer 11

^^ i really cant this is my last assigment can u please just help me i need to get this class grade in

Answer 12

Divide both sides by ln(2) then subtract 3.

Answer 13

Subtract 3 from both sides (inverse of addition) and then divide both sides by 2 and you should come up with the answer.

Answer 14

@sonicx28@sbcglobal.net She corrected her question.

Answer 15

idk...?

Answer 16

Alright, here's the complete solutions WITHOUT the answers. If you can't solve it yourself, too bad; I'm not doing your homework, only helping you learn it.

2^(x+3)=7; question
ln(2^(x+3))=ln(7); take ln() of both sides
(x+3)ln(2)=ln(7); a la property ln(a^b)=bln(a)
x+3=ln(7)/ln(2); divide by ln(2)
x=(ln(7)/ln(2))-3; subtract 3

Answer 17

-0.19