(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.
Composite number is a positive integer that can be formed by multiplying together two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself.[1][2] Every positive integer is composite, prime, or the unit 1, so the composite numbers are exactly the numbers that are not prime and not a unit.
For example, the integer 14 is a composite number because it is the product of the two smaller integers 2 × 7. Likewise, the integers 2 and 3 are not composite numbers because each of them can only be divided by one and itself
Answer:
The answer is 4.161844e+16
Step-by-step explanation:
3.5 , 3.3, -3, -3.25, -3.3