W- (3,4)
Z- (-1,1)
X-(-1,-3)
Y-(-4,1)
For this case we have, by definition:

So, we have:

On the other hand we have that by definition:

Thus, the expression can be written as:




So, we have:

Answer:

Answer: X=0.28571428571
Step-by-step explanation:
-10x divide by 10 =x , -10 divide by 35=0.28571428571
Answer:
(6,7,8)
Step-by-step explanation:
solving the inequality will give x>5
step 1
find the equation of the line
where
x-------> numbers of light bulbs
y-------> the total cost in $
let
A (0,0) B (10,18)
slope m=18/10-----> m=1.8
step 2
with m=1.8 and the point A (0,0)
y-y1=m*(x-x1)------> y=1.8x
step 3
for x=1
y=1.8*1------> y=$1.8
therefore
the answer is
the cost of a single light bulb is $1.8