B. Exactly one solution
7y +21 = 5y +8
7y +13=5y
13=-2y
-6.5=y
Answer:
Apply the formula for sum of cubes:
Therefore:
I think the answer is a I am learning this too
One in 30 chance. 10 people can win, so 10/300 is 1/30
Yesterday's price of notebook = $3.45
Today's price of notebook = $3.20
We have to determine the percentage decrease in the cost of notebook.
Percentage decrease = (Decrease Old price)
So, percentage decrease =
=
= 7.246%
= 7.25%
Therefore, there is 7.25% of decrease in the cost of the notebook.