Notice this is a geometric progression since each number multiplied by some factor equals the next number in the sequence, in this case,

Then by applying the formula for sum to infinity of a geometric progression,
Answer:
It is 9000 cents or $90 total for 5 hours
Step-by-step explanation:
He would have gotten 24 right out of 30 questions to get 80% on his 3rd test
Answer:
The answer will be 10
Step-by-step explanation:
15/3*4/2
5*2
=10
Answer:
Standard Form: 47.9
Scientific Notation Form: 4.79 x 10
Step-by-step explanation:
1.2 x 106 = 127.2
1.7 x 103 = 175.1
175.1 - 127.2 = 47.9
47.9 = 4.79 x 10