Answer:
D and F
Step-by-step explanation:
can be rewritten as 
.
From there you can use the quadratic formula 
(ignore the A, I can‘t seem to remove it), where a=1, b=4, and c=-8.
Then you get 
Then you get 
So 
Which means 
or 
which are choices D and F.
Answer:
$51
Step-by-step explanation:
51 x 1.2 = $61.2
61.2 x 1.2 = $73.44
73.44 x 1.2 = $88.13
88.13 x 1.2 = $105.75
105.75 x 1.2 = $126.90
Assuming f(x) is the cost and X is the number of months.
f(x)=2x+40
1 and 1/6th of an ornge because if you do 5/3 you get 1.6666667 then when you round you get 1.6 or 1 and 1/6th
A perfect situation to use a proportion:
(3.9 x 10³³) / 1 = X / (2.45 x 10⁵) .
Solve that proportion for ' X ' in the usual way.
If you can't remember how to solve a proportion, then
THAT's what you have to go look up. It's much more
important to you right now than how much energy the
sun is putting out.
7.4 x 10⁴ mm is the same size as about 243 feet !
If the tracks on a DVD were that far apart, there would not be
room for very many tracks on a DVD. That's not reasonable.
If the tracks are 7.4 x 10⁻⁴ mm apart, then there are about
34,000 tracks in a stripe that's 1-inch wide. I have no idea
how they do this, but it's certainly more reasonable than the
other choice.
