It's simple you've been told that correct answers equals 6/7 and she did all the questions. Therefore the incorrect answers equals 1/7, which is 4. So just times 4 by 7. 4 x 7 = 28. 28 questions on the quiz.
Answer:
-12π
Step-by-step explanation:
1b,
2b,
3a, which grade is this?
Answer:

Step-by-step explanation:
A sequence is defined by the recursive formula
If
then
for 
for 
for 
for 