No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.
Answer:
a. s = .9*r
b. Yes, because the regular price is only being multiplied by a number without any additional operations.
Step-by-step explanation:
Answer:
true
Step-by-step explanation:

Answer:
a = 256; r = 
Step-by-step explanation:
The general form of the geometric sequence is:
a, ar, ar², ar³, . . .
where 'a' is the first term of the sequence;
'r' is the common difference.
Fourth term of the sequence = ar³ = 32
Sixth term of the sequence = ar⁵ = 8
Dividing both the equations, we get:

⇒ r² = 
⇒ r = 
Therefore, we get a = 32 X 8
a = 256
The first term of the sequence is 256 and the common difference is
.
Hence, the answer.
Answer:
5 dollars a hour. ,
Step-by-step explanation:
count by fives