Answer:
The number of packages Justin needs to buy to get x cards is x divided by 3.
- <u>Rule as an algebraic expresssion:</u>

Explanation:
This is a direct variation problem.
Since each package has the same number of cards, the number of cards is proportional to the number of packages.
12 baseball cards in 4 packages means that there are 12/4 = 3 cards per package, so:
- The number of cards is 3 times the number of packages.
- The number of packages is the number of cards divided by the number of 3.
So, the <em>rule in words</em> for the number of packages Justin needs to buy x cards is one third of x. This table may help you to visualize it:
Number of packages: 1 2 3 4 5
Number of cards: 3 6 9 12 15
To find the <em>algebraic expression</em> that describes the same rule, you can set the following proportion:

Where y is the number of packages and x is the number of cards.
And from that you solve for y:

Answer:
x=20
Step-by-step explanation:
All interior angle of quadrilateral equal 360 degrees
In the deck of cards, there is a total of 52 cards which
comprises of: kings, queens, jacks, 10, 9, 8, 7, 6, 5, 4, 3, 2, and aces.
In the problem, we were asked the probability of less than
5, so it would be Ace, 2, 3, and 4. 5 is not included since the problem didn’t
ask less than or equal to.
So 4 cards and we have 4 suits in the deck. So 4 x 4 = 16.
16/ 52 = .31 is the probability.
Answer:
Step-by-step explanation:
For the first question: You need to multiply 20 by 0.05 to find the sales tax amount in dollars, which gives you $1. The sales tax is equal to $1.
For the second question: To find the total cost, add $1 to $20 to get $21 as the total cost for the shirt.
The answer is m line segment R