Answer:


Step-by-step explanation:
Given




Required
The number of each coin
The total coins can be represented as:


So, the worth of the coin is:

The equations to solve are:


Make d the subject in: 

Substitute
in 


Collect like terms


Solve for q


Substitute
in 


So:


Answer:
12.5
Step-by-step explanation:i did that problem before
Answer:
It will be B because the numbers is functions
Step-by-step explanation:
Answer:
5.5
Step-by-step explanation: