Question

solve for x: 4^(3x+5)=16

Answer 1

x = -1

Answer 2

how do you do it though??

Answer 3

it's very easy..........

Answer 4

can u teach me?

Answer 5

yes, off course , free of cost........

Answer 6

that's why i m here ......

Answer 7

lol dont be annoying

Answer 8

i m not joking..........

Answer 9

moving on..

Answer 10

you can just set the equation in the exponent = to 2... becuase u know that 4^2 is 16, so 3x+5=2

Answer 11

Step by step:
4^(3x+5)=16
Rewrite 16 as 4^2:
4^(3x+5) = 4^2
Take Ln of both sides:
Ln[4^(3x+5)] = Ln[4^2]
Remember the property:
LnA^b = b*LnA, so:
3x+5 = 2; 3x = -3; x = -1

Answer 12

sorry, for late reply, due tp connection problem..

Answer 13

Here step by step: http://www.yourfreetutor.com/index.php?option=com_content&view=article&id=99&Itemid=226