(a)
In the function P(n) = 0.4n +5.7, P(n) is price of n grams of vitamins. So for the function x = P(n); x is price of n grams of vitamins.
The inverse of function determine amount of the vitamins for the known price of x dollars. So answer is,
The amount of vitamins (in grams) for a price of x dollars.
(b)
Let P(n) = x, So

Replace n by x and x by n in the given equation.

Simplify the equation for x.

So inverse of function is after interchange of variables,

(c)
Substitute 8.3 for x in the inverse equation to obtain the valur of P^-1(8.3).

So answer is 6.5.
I don’t know, what did he say?
Answer:
The answer is option 3.
Step-by-step explanation:
The area of triangle formula is A = 1/2×base×height. Then substitute the following values into the formula :

Let base = 10,
Let height = 12,



Answer:
d = - 1
Step-by-step explanation:
The common difference d between consecutive terms is
6 - 7 = 5 - 6 = 4 - 5 = - 1