r-12
substitute in r=7
so 7-12 = -5
Answer:
dy/dx = 
Step-by-step explanation:
-y + 2x²- x = -5y³
2x² - x = y - 5y³
4x - 1 = dy/dx - 15y².dy/dx
dy/dx(1 - 15y²) = 4x - 1
dy/dx = 
<h2>
Answer:</h2><h2>
The rate of reading a book per month =
= 20%</h2>
Step-by-step explanation:
Nathan read 2 books in 10 months.
The time taken to complete 1 book =
= 5 months
To complete 1 book it takes 5 months.
The rate of reading a book per month =
= 20%
Hot Dog Stand
Let
C--------> total cost of the hot dog
x-------> is the number of toppings
we know that

where
The slope of the linear equation is equal to 
The y-coordinate of the y-intercept of the linear function is equal to 
That means -------> This is the cost of the hot dog without topping
Hamburgers Stand
Let
C--------> total cost of the hamburger
x-------> is the number of toppings
we know that

where
The slope of the linear equation is equal to 
The y-coordinate of the y-intercept of the linear function is equal to 
That means -------> This is the cost of the hamburger without topping
therefore
<u>the answer is</u>
The linear equation of the hamburger cost is equal to

Answer:
A=2(1+2)a2=2·(1+2)·22≈19.31371
Step-by-step explanation:
hope this helps!