It factors to (x+12)(x-12)
This is the same as (x-12)(x+12) as we can multiply two expressions in any order we want. This is like saying 7*5 is the same as 5*7
I used the difference of squares rule to factor x^2 - 144. It might help to write x^2 - 144 as x^2 - 12^2, then compare it to a^2 - b^2 = (a-b)(a+b)
The profit of the author will be $160.
When we sell any product above its cost price then there will be a profit. It is given that An author is having a book signing at a store. He agrees to give 5% of his profit to literacy programs and 15% of his profit to his manager. If he makes a profit of $200.
First, you add 15%+5% which equals 20%.
Second, you find 20% of $200. You turn 20% into a decimal, which is 0.20. Then multiply 200 times 0.20. which is 40. $40 is the amount the author gave away.
Third, you subtract 200-40 which equals $160. He takes home $160.
To know more about Profit follow
#SPJ2
Answer:
Axis of Symmetry:
x=2
Vertex:
(2,11)
Step-by-step explanation:
Finding the derivative:
f'(x)=-10x+20
Setting the slope equal to zero:
-10x+20=0 x-2=0 x=2
Finding vertex:
f(2)=-5*(2)^2+20*2-9
=-20+40-9=20-9=11
(2,11)
2 x
---- = --------
3 3x+y