Maybe 430 or 400 could be the answer to that problem
Answer:
Step-by-step explanation:
I can't get to act correctly either.
The answer is 1 day and 7 items.
Ariana
y = 5x + 2
Julie
y = 7x
The ys have to be the same so equate the right hand side.
7x = 5x + 2 Subtract 5x from both sides.
7x - 5x = 5x - 5x + 2
2x = 2 Divide by 2
2x/2 = 2/2
x = 1
1 day
7 items
Let x = Barbie's number
1/3 x -20 = 72
1/3 x = 92
x = 92*3=276
It will take them 10 days to have the same amount of credits.
The only thing I did was to keep adding what they where earning per day!
Your answer should be 2.22
