To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 100 meters to kilometers, divide the distance by 1000 to get 0.1km then add the remaining distances:

total distance = swim + bike + run
total distance = 0.1km + 20.5km + 16.4km
total distance = 37km

Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):

3 + (3 + 4) ÷ 3 x 2 - 4²
P: 3 + (7) ÷ 3 x 2 - 4²
E: 3 + 7 ÷ 3 x 2 - 16
MD: 3 + \( \frac{7}{3} \) x 2 - 16
MD: 3 + \( \frac{14}{3} \) - 16
AS: \( \frac{9}{3} \) + \( \frac{14}{3} \) - 16
AS: \( \frac{23}{3} \) - 16
AS: \( \frac{23 - 48}{3} \)
\( \frac{-25}{3} \)
-8\(\frac{1}{3}\)

A number in scientific notation has the format 0.000 x 10^exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:

4,655,000 in scientific notation is 4.655 x 10⁶

The area of a circle is given by the formula A = πr² where r is the radius of the circle. The radius of a circle is its diameter divided by two so A = π(\( \frac{d}{2} \))². If the diameter of the logo increases by 40% the radius (and, consequently, the total area) increases by \( \frac{40\text{%}}{2} \) = 20%

29% of the water consumption is industrial use and 15% is personal use so (29% - 15%) = 14% more water is used for industrial purposes. 5,000 gallons are consumed daily so industry consumes \( \frac{14}{100} \) x 5,000 gallons = 700 gallons.