Answer:
4th one is correct for x/y
Given:
The number of teeth = t = 25
The gear is driven by a 10-tooth driver gear (T) at 250 RPM
Let the speed = s
So, using the ratio and proportion

Solve for s:

So, the fear will be driven by 625 RP
Wish I could help I’m not good at math
Answer:
4/5 is the slope of the line represented by the equation y = 4/5x - 3
The total number of people who visitedthe ocean adventure park last year was 7,040,836
In 7,040,836, there are FOUR digits after 4.
To find value of 4, just put FOUR zeroes after 4
Thus, Value of 4 = 40000