1. Graph: a) positive:x>1
b)negative: x<1
c) increasing : none
d ) decreasing: x ∈ R\ { 1 }
2. a) positive: x < -2
b) negative: x > -2
c) increasing: x ∈ R\ { -2 }
d ) decreasing: none.
3. a) positive: x ∈ R\{ 0 }
b ) negative: none
c ) increasing: x< 0
d ) decreasing: x> 0
Draw your own diagram: in the attachment.

The phrase "up to" means less than or equal to since John cannot send more than 250 messages.
Answer:
function 2
function 1
function 3
Step-by-step explanation:
function 1 has a slope of -2, function two has a slope of -8/3 or approximately -2.6 function three has a slope of -11/6 or approximately -1.8
There are 12 months in a year so. 85x12=1020
I have no clue I just need the points have a good day tho :)