25 ! the designer of a role-playing game uses a function, p(x), to determine the minimum number of experience points a player needs in order to unlock chapter x of an adventure. select the appropriate domain for this situation. a. the set of all real numbers b. the set of all positive real numbers c. the set of all positive integers d. the set of all integers will mark brainliest

The appropriate domain for this situation.C.  The set of all positive integers

Further explanation

Numbers in mathematics can be divided into several terms

Real numbers include Whole Numbers (0,1,2..),Rational Numbers(numbers that can be expressed in simple fractions), or Irrational Numbers(√3,π, etc)

Integer  consist of positive, negative and 0 numbers

A role-playing game have experience points of a player for every chapter.

So the chapter must be in number 1,2,3 .. etc

Domain is the input of a function

for the function P(x), x = domain

Then the appropriate domain for this situation :

C.  the set of all positive integers

It is not possible to choose points A, B, or D because they can be negative or fractional

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the set of ordered pairs of functions

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Keywords : function, a role playing game, chapter, domain

The answer to this question is c

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle