The best answer is
40
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3
Suppose:
C=cost
c=cost per kilo-watt hour
w=number of watts
h=number of hours
thus
C=kwhc
where:
k=constant of proportionality:
k=C/(whc)
but
C=15 when w=6000, h=10/60=1/6 hours, c=7.5 cents per kw/h
thus
k=15/(6000*1/6*7.5)
k=0.002
thus:
C=0.002(whc)
hence:
when
h=70*2=140=140/6=70/3 hours the cost will be:
C=0.002(6000*70/3*7.5)
C=2100 cents
C=$21
(66✖️578) ➗ 3368=55➗77
P parentheses
E exponents
M multiplication
D division
A addition
S subtraction
You would do (66✖️578) first since it is in parentheses
66✖️578=38,148
38,138➗3368=55➗77
Since there are no exponents or multiplication you would do division
38,138➗3368= 11.3236342
55➗77=0.7
11.32 does not equal 0.7
So this equation would be false
Hope this helps! :3
Answer:
Given the graph
and 
We have to find the value of k;
Since, g(x) = f(x) +k

Subtract
from both sides we get;

Add 2 to both sides we get;

Simplify:

or
k = 5
Therefore, the value of k = 5