Answer:
729:1
Step-by-step explanation:
Answer:
c(x) = –8x^2 + 3x – 5 is a quadratic
Step-by-step explanation:
A quadratic function involves the 2nd power of x: x^2, and may (or may not) involve the 1st and zeroth power of x.
a(x) = -2x^3 is not a quadratic because of that exponent 3; in a quadratic, the highest power is always 2.
b(x) = 5x^3 + 8x^2 + 3 is not a quadratic for the same reason that a(x) is not a quadratic.
c(x) = –8x^2 + 3x – 5 is a quadratic: the highest power of x is x^2, the other powers are x^1 and x^0.
Cost function, 
Revenue function, 
Profit function, 
Break point 
.
Fixed cost 
$
.
Variable cost $
.
Price of item $
.
Let 
be the number of items produced and sold.
a) Cost function Fixed cost 
variable cost \times number of items
So,
b) Revenue Price of an item 
number of items
So,
c) Profit Revenue 
Cost
d) <u>Break even point</u> 
.
So, the product should be produced for 
or more items.
Learn more about cost function here:
brainly.com/question/13129990?referrer=searchResults
Answer:
c. 80
Step-by-step explanation:
cos x = sin(x-70)
cos x = cos [90-(x-70)]
cos x = cos (90-x +70)
cos x = cos 160 -x
x= 160-x
2x = 160
x =80
