Find the Indicated Sum $$\sum _ { k = 2 } ^ { 4 } \mathrm { k } ( \mathrm { k } + 11 )$$

question 16

Multiple Choice

Find the indicated sum.
- $$\sum _ { k = 2 } ^ { 4 } \mathrm { k } ( \mathrm { k } + 11 )$$

• A) 86
• B) 51
• C) 140
• D) 128

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Definitions:

Ultraviolet Waves

Electromagnetic waves with wavelengths shorter than visible light, harmful to skin and eyes but essential for Vitamin D synthesis in humans.

Organic Compounds

Chemical compounds primarily made of carbon atoms bonded with other elements such as hydrogen, oxygen, and nitrogen, found in all living organisms.

Hydrocarbons

Organic compounds consisting entirely of hydrogen and carbon, found in fossil fuels and as a major component of petroleum and natural gas.

Low-Quality Energy

Energy that is dispersed and difficult to gather for useful work, such as heat energy at a low temperature.