Answer:
I think the slope is UNDEFINED
y²-y¹/x²-x¹
(-5)-(16)/(-12)-(-12)
-21/0
=Undefined
Answer:

Step-by-step explanation:
One-fourth x + 2 = 

Next, we Expand the Left hand Side by multiplying each term in the bracket by 1/4

Bringing terms with x to the left Hand Side i.e. collecting like terms

On Cross multiplying
7x = -7 X 8

x=-8
Answer:
C= 7y +150
850
250
Step-by-step explanation:
The cost is 7 times y, the number of yearbooks, plus 150, the upfront cost.
7 times 100 is 700, plus 150 is 850.
1900-150 is 1750 divided by 7 is 250
Answer: Relative risk of anxiety associated with coffee use is 5 times the anxiety associated with non coffee use.
Step-by-step explanation:
Since we have given that
Number of coffee drinkers = 10000
Number of whom developed anxiety = 500
Number of non coffee drinkers = 20000
Number of whom developed anxiety = 200
So, probability of getting anxiety from coffee drinkers = 
Probability of getting anxiety from non coffee drinkers = 
so, Relative risk of anxiety associated with coffee use is given by

Hence, Relative risk of anxiety associated with coffee use is 5 times the anxiety associated with non coffee use.