the formula for slope is

so just replace y and x for the proper values
Answer:
Step-by-step explanation:
Given
42% bulbs are fluorescent
23 % bulbs are long life
12% bulbs are fluorescent and long life
(i)Selected Bulb is not Fluorescent 

(ii)Selected light bulb is fluorescent given that it is labelled as long life

b.Fluorescent and long life events are not independent because if a bulb is fluorescent then it may be long life
Answer:
-145
Step-by-step explanation:
-5-15-25-x=100
First, get all the numbers(including 100) on one side and x on the other side(make sure x is POSITIVE, not negative)
-5-15-25-100 = x
Two negatives = addition
-5 - 15 = -20
-25 - 100 = -125
Now add, 20 and 125, and keep the negative
-125 - 20 = -145