Answer: 
Step-by-step explanation:
Solve for positive 72 and separate the negative part as

The rest of calculation is same..
Total songs = 1240
Rock songs = 40%
Songs that are not rock = 100 - 40 = 60%
It would be: 1240 * 60% = 1240 * 0.60 = 744
In short, Your Answer would be 744
Hope this helps!
3 hundreds + 7 hundreds = 1 thousand
300 + 700 = 1000
Answer:

General Formulas and Concepts:
<u>Calculus</u>
- The derivative of a constant is equal to 0
Step-by-step explanation:
<u>Step 1: Define function</u>
y = 152 + 26 - 37
<u>Step 2: Simplify</u>
<em>Combine like terms</em>
y = 141
<u>Step 3: Find derivative</u>
<em>Derivative of any constant will be 0.</em>
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