Step-by-step explanation:
On the first question, you would want to put the equation together. To find x you will put 2x+6=40. Subtract 6 on both sides and you will find your x value.

Divide both the numerator and denominator by 9 to get;

Convert the improper fraction to a mixed number;
C
5 x f
5 = price for flowers
f = variable = how many flowers.
I believe the correct answer is a hope this helps
Answer:
64%
Step-by-step explanation:
The nickel= 9/25
The copper=16/25
1. Multiply by 4 to get a total of 100
nickel=36/100
copper= 64/100
Sorry if it is wrong but i hope i was right