Answer:
2.38 dollars in a week
Step-by-step explanation:
168 hours = Week
400 dollars = Week
400 ÷ 168 = 2.38
Let x = number of students in each of the remaining rows
266 = (10 x 20) + (5 x 8) + 2x
266 - (10 x 20) - (5 x 8) = 2x
266 - 200 - 40 = 2x
26 = 2x
x = 26/2
x = 13
To solve this problem you must apply the proccedure shown below:
1. You must calculate the perimeter of the circle:
The radius of the circle in inches is:


2. Now, you must divide the perimeter by the space between each flower to find the number of flowers needed, which you can call
:

The answer is: 126 flowers.