Answer:
1.B not sure about 2 though sorry i couldnt help u on 2 Step-by-step explanation:
I think is
4x - 3 (-2) = 18
4x + 6 = 18
4x = 12
x = 3
Answer:
Validation
Step-by-step explanation: Validation is a term used to describe the processes involved when we compare a set of values and observations against a set standard or rules to ensure that they meet certain expectations or criteria.
Validation is meant to prove that something, a data set etc are acceptable based on known rules, the rules or standards which is used to evaluate what can be described as valid.