Answer:
19
Explanation:
I legit did this and it took 19.
Answer:

Given:
1$ = 4q
To Find:
How many quarters are in 20$
Explanation:
To find out how many quarters are in 20$ we need to multiple 4 × 20.



F~1/r²
doubling the distance r, Decreases the force by ¼
L = illuminance
A = surface
i = intensity
L = i / A ==: i = L * A
i = 6 lux * 4 m^2 = 24 lumen