Which of the following gives an example of a set that is closed under addition?

the sum of an odd number and an odd number

the sum of a multiple of 3 and a multiple of 3

the sum of a prime number and a prime number

none of these are an example of the closure property.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!