%error=100(estimated-actual)/actual
%error=100(96-(96-16))/(96-16)
%error=100(16/80)
%error=1600/80
%error=20%
She overestimated how many bracelets she would sell by 20%
-6(4x + 1) + 7x + 9(x - 3) = 4
-6(4x) - 6(1) + 7x + 9(x) - 9(3) = 4
-24x - 6 + 7x + 9x - 27 = 4
-24x + 7x + 9x - 6 + 27 = 4
-8x + 21 = 4
- 21 - 21
-8x = -17
-8 -8
x = 2.125
The correct answer is 41.
Answer:
c
Step-by-step explanation:
Using Pascal's triangle, the expansion, although EXTREMELY lengthy, will help you find the 7th term. I am going to type out the expansion only up til the 7th term (although there are actually 10 terms because we are raised to the power of 9). If you would like to learn how to use Pascal's Triangle for binomial expansion, you will need to visit a good website that explains it because it's just too difficult to do it via this website.
The expasion is as follows (up to the 7th term):

That last term is the 7th term. You find out its value by multiplying all the numbers together and adding on the c^3d^6. Again those come from Pascal's triangle, and it's one of the coolest math things ever. I encourage you to take the time to explore how it works.
Let's take another look at the question:
If 4 is subtracted from twice a number the result is 10 less than the number.
let x = the number
"if 4 is subtracted from" is the same as
-4
"from twice a number" is the same as
2x
so put them together,
2x-4
"the result is"
=
2x-4=
10 less than
-10
the number
x
2x-4=x-10
now we find x
subtract x from both sides to get
x-4=-10
add 4 to both sides to get
x=-6
to check, plug in the value of x into the original equation
If you have any further questions, just ask me