Extra 10, 10 is half of what she ordered so she received an extra 50%
Answer:
137 cars per hour
Step-by-step explanation:
Since there were 685 cars all together you have to do 685 divided by 5 so that you can get your answer of 137 cars per hour
Answer: 
Step-by-step explanation:
For this exercise is necessary to remember the following formula:

Where "V" is the speed, "d" is the distance and "t" is the time.
In this case you must solve for the time, then:

Based on the information provided in the exercise, you can identify that:

Therefore, knowing this, you can make the substitution into the formula
.
Through this procedure you get that the equation that can be used to find the amount of hours "h" that it will take Sandra to drive "m" miles at her constant speed, is:

Answer:
Diverges; no sum
Step-by-step explanation:
This is comparable to:
where:
r is the common ratio and
is the first term.
The series converges to:

if the ratio's absolute value is less than 1.
This is a geometric series.
The common ration is -1.04 .
The first term in the series is 0.001.
Since the absolute value of -1.04 is 1.04>1, the series diverges.