The cost, c, of a ham sandwich at a deli varies directly with the number of sandwiches, n. If c = $54 when n is 9, what is the c
2 answers:
Answer:
Option A is correct that is $18
Step-by-step explanation:
We have been given an information that is
c=$54 when n =9
when 9 gives 54
Then 1 gives 54/9
cost for one sandwich that is when n=1 then
We need to find the cost for 3 sandwiches that is when n =3 then
when cost for one sandwich is 54/9 then cost for 3 sandwiches is
Therefore, Option A is correct tha is $18.
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Using linear function concepts, it is found that:
- a) It costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.
- b) f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.
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A <em>linear function </em>has the format given by:
In which:
- m is the slope, which is the rate of change, that is, how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0.
The equation for the cost of h kilowatt hours (kWh) of electricity used in excess of 250 kWh is of:
Item a:
- The slope is of
, which means that it costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.
Item b:
250 + 90 = 340.
f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.
A similar problem is given at brainly.com/question/24808124