Answer:
Geometric sequence.
Step-by-step explanation:
This is a Geometric Sequence with common ratio -2:
-2 = 1* -2
4 = -2*-2
-8 = 2 * -2.
the nth term = (-2)^(n-1).
Easy
just remember
you can do ANYTHING to an equaiton as long as you do it to both sides
try to get place holder by itself
4.5b+9=90
minus 90 from both sides
4.5b+9-9=90-9
4.5b+0=81
4.5b=81
either divide both sides by 4.5 or double 4.5 to get rid of the decimal
I will double
double both sides
9b=162
divid both sides by 9
b=18
If we solve this equation:
<span>8.9=logx+7.9
</span>
we get:
<span>logx=<span>1</span></span>
So I'm not totally sure but I got -15.32
So sorry if it's wrong!!
