Maria ran farther because 3/4 is closer to a full mile than 3/8
The the cost of 13 CDs would be $30.
<h3>How to find the Cost Function?</h3>
A cost function is a function of input prices and output quantity whose value is the cost of making that output given those input prices, often applied through the use of the cost curve by companies to minimize cost and maximize production efficiency.
If $20 represents the cost of the 5 used CDs, than your formula would be "20 + 4x" , with x being the amount of extra CDs you purchase.
The number of CDs minus 5 is our x value, because the first 5 are the used CDs bundled into the $20 group. Thus;
26 + 4(13 - 5)
26 + 4(1)
26 + 4 = $30
Thus, we conclude that the cost of 13 CDs would be $30
Read more about Cost Functions at; brainly.com/question/2292799
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Answer: 
Step-by-step explanation:
- A coin has 2 sides. Which means the probability of the coin landing on one side will be 
.
- Since there are three coins, we multiply three times ( * * ) to get the answer of
To solve the area of a cylinder, you need to do steps.
Calculate volume of a cylinder: V = πr2h.
...
Calculate the lateral surface area of a cylinder (just the curved outside)**: L = 2πrh.
...
Calculate the top and bottom surface area of a cylinder (2 circles): T = B = πr. ...
Total surface area of a closed cylinder is:
439.82 square inches
