raffle tickets are being sold for a fundraiser. The relationship between n, number of raffle tickets sold, and A, amount of mone
y in dollars raised, is given by the function below. A(n)=3n-20 What is the equation of the inverse function N(a)?
2 answers:
Answer:
D. N(a) = (a + 20)/3
Step-by-step explanation:
A(n) = 3n - 20
A is a function of n. The inverse will be: N is a function of a.
Change A(n) to y and n to x.
y = 3x - 20
Switch x and y.
x = 3y - 20
Solve for y.
x + 20 = 3y
3y = x + 20
y = (x + 20)/3
Now switch y to N(a) and x to a.
Answer: N(a) = (a + 20)/3
Answer:
The inverse is (n+20)/3
Step-by-step explanation:
a(n) = 3n - 20
Let this equal y
y = 3n-20
Exchange y and n
n = 3y-20
Solve for y
add 20 to each side
n+20 = 3y-20+20
n+20 = 3y
Divide each side by 3
(n+20)/3 = 3y/3
(n+20)/3 = y
The inverse is (n+20)/3
You might be interested in
The graph of proportional relationship is the straight line in Quadrant I and start in the origin.
Look at the picture.
Answer:
no triangles
Step-by-step explanation:
As we know the basic rule to form a triangle is that the sum of the two sides must be greater than the third one.
Given that:
4 m, 5.1 m, 12.5 m
We have: 4 m + 5.1 m = 9.1 m < 12.5 m
So no triangles can be formed.
2x-12 represents "two times the quantity of a number minus 12"
Step-by-step explanation:
Disculpe pero de qué grado es usted para ayudarle un poquito más mejor
Answer:
it is 2/3
Step-by-step explanation: