Rounded to the nearest hundredth, numbers look like this:

So, our number lies between 0.62 and 0.63. We have to check which of the two is closer. To measure the distance between numbers, we use the absolute value of the difference:

Since
, we deduce that 0.63 is closer to 0.6288 than 0.62, and thus it's a better approximation.
In the function g(x) the exponent is (x - 1), so g(x) = 12 * 2 ^ (x -1)
h(x) = 3x
So, you have to find the product f(x) * h(x) for x = 6
f(6) = 12 * 2 (6 -1) = 12 * 2(5) = 12 * 32 = 384
h(6) = 3(6) = 18
f(6) * h(6) = 384 * 18 = 6912
Answer: 6912
21 divided by 2 is 10.5 and if you add 4 to it, it gives you 14.5. there you go
Answer:
Option B. 
Step-by-step explanation:
step 1
Find the area of a circle with radius 8.5 inches
The area of a circle is equal to

substitute


step 2
Find put the approximate area of the fan
we know that
The area of complete circle subtends a central angle of 360 degrees
so
using proportion
Find the area that correspond a central angle of 125 degrees

assume

