Answer:

Step-by-step explanation:
Given





Required
Find the constant of variation
From the question, the variation is as follows



Convert variation to equation

Where k represents the constant of variation
Make k the subject of formula;
Multiply both sides by s * t


Divide both sides by p



Substitute the values of p, r, s and t in the above equation


Divide numerator and denominator by 6

Hence, the constant of variation is; 
With the given inequalities, the best answer is the middle graph. Getting the values for x, we obtain x>5 and x>=1. The middle graph shows that the value of x is all real numbers greater than or equal to 5. This best satisfies both equation as the two values for x requires real number greater than 5 and greater than or equal to 1 respectively.
Answer:
1/2 Mile In 1 Hr. or 0.5 MPH
Step-by-step explanation:
Since we know 1/4 is in 30x
1 hr = 60x
1/4 = 30x and we're looking for 60x -->
Simply we multiply 1/4 by 2 giving us 2/4
--> simplify and we have 1/2
Final: 1/2
<u><em>Hope this helps!</em></u>
4.5 miles. 1.6 times 7.2 is 4.47 which rounds up to 4.5