Answer:
c correct me if i am wrong i am sorry if i was wrong
Explanation:
Answer:
C.how to tell whether the test was accurate
Explanation:
This is because, after the test, Safiya's brother should be able to check if the test carried out was accurate and not wrong as directed.
This could be done through series of validation technique rather than assuming that the test carried out was correct.
The factors of 81 are
1,3,9,27 ,and 81
hope this helps :)