Answer:
In your change cup you have 28 coins. All of which are nickels and quarters. Together they add up to $4. How many coins do you have of each.
It is easier to solve by substitution.
3A+2B=20
2A+B=13 ➡×(-2)➡-4A-2B=-26
3A+2B-4A-2B=20-26
-A=-6 ➡A=6
2(6)+B=13➡B=1
The picture below is the answer to your question. I solved it myself when I was doing my homework.
Answer:
$35
Step-by-step explanation:
This is actually pretty simple!
All you have to do is plug 5 in place of x and solve.
Y=5(5)+10
Y=25+10
Y=35
She raises $35 if she walks 5 kilometers.
