Let the set of all Odd multiples of 9 between 2 and 82 be denoted by D, then, using set-builder notation,

The odd multiples of 9,
, in the range
form the set

Each member of the set is a term of the arithmetic progression

where the values of
range from 0 to 4, or 
Putting these facts together, we get the result

Learn more about set-builder notation here: brainly.com/question/17238769
The square root of 5 is 2.23 so it would be closer to 2
Answer:
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
21×43
=(20+1)×(40+3)
=800+40+60+3
f(x) = -5x - 15
Let y = f(x)
y = -5x - 15
Switch the x and y places, and solve for y:
x = -5y - 15
-5y = x + 15
y = (x + 15)/-5
y = -(x/5) - 3
So the inverse of : f(x) = -5x - 15 is
-x/5 - 3