Answer:

1 is a whole number, an integer, and rational.
Step-by-step explanation:
Answer: 21
Step-by-step explanation: In these types of problems, you use inverse operations. The inverse operation for multiplying is dividing. 42 divided by 2 is 21.
Answer:
8k
Step-by-step explanation:
1. Simplify: -k + 8k
2. -k + 8k = 7k
Given:
The given values are:

To find:
The exponential regression equation for the given values (Rounded to three decimal places).
Solution:
The general form of exponential regression equation is:
...(i)
Where, a is the initial value and b is the growth/decay factor.
We have,

Round these numbers to three decimal places.

Substitute
in (i) to find the exponential regression equation.

Therefore, the correct option is C.
Is the answer supposed to be 28?