Answer:
C. 
Step-by-step explanation:
To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.
We are to form the combination of 6 objects taken 2 at a time. This can be expressed as 6C2

This means, there can be 15 different combinations of 2 members that can sit in the front row.
So, the answer to this question is option A
Answer:

Step-by-step explanation:
Let
x-------> the number of pies
we know that
-----> linear equation that represent the situation
solve for x




Round to the nearest whole number

Answer:
Thanks for asking!
Step-by-step explanation:
The answer is -x²+9+12
$46 divided by 5 which equals $9.50