Remember that we can calculate the sinmple interest earned in an investment or saving using the formula:

Where:
P is the money invested/saved
R is the rate of interest
T is the time of the investment/deposit in years
Using this formula and the data given, we get:

Therefore, the interest earned is $285.60
It’s a function if it passes the vertical line test or pencil test. Using a pencil and following the function if it touches the pencil in more then one spot it is not a function.
1. Function
2. Function but can be placed in not enough information
3. Not a function
4. Function
5. Function
6. Not a function
Answer:
Yellow = 18 spools of ribbon
Blue = 15 spools of ribbon
Bobby will have 3 more spools of yellow ribbon.