Given:
There are given that the two paths and one path are 2 miles from the road.
Explanation:
Suppose the distance from the playground to the road is x.
To find the value x, we need to use the cos function;
So,
From the cos function in the given right angle triangle:

Then,

Then,

Final answer:
Hence, the correct option C.
5x+2y=20 when x=3/10 is:
5(3/10)+2y=20
15/10+2y=20
1.5+2y=20
2y=18.5
y=9.25
Put the value of x to the inequality:

Answer:
2
Step-by-step explanation:
5(2) - (2)^3 = 10 - 8 = 2