Write the equation for the following situation: In one U.S. town, the annual consumption, s, of sugar (in kg per person) can be estimated by adding 30 to half the years, t, since 1975.

Then graph the equation and use the graph to determine the sugar consumption in the year 1991.

I have wrote the equation like this:
Equation:
s=(t-1975)/2+30
if t = 1991 then,
s=1991-1975/2+30
s=16/2+30
s=8+30
s=38
Is this right so far?
I am also having trouble graphing this equation.

Question

Write the equation for the following situation: In one U.S. town, the annual consumption, s, of sugar (in kg per person) can be estimated by adding 30 to half the years, t, since 1975.

Then graph the equation and use the graph to determine the sugar consumption in the year 1991.

I have wrote the equation like this:
Equation:
s=(t-1975)/2+30
if t = 1991 then,
s=1991-1975/2+30
s=16/2+30
s=8+30
s=38  
Is this right so far?
I am also having trouble graphing this equation.

owlfred · Answer

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anonymous · Answer

your equation is correct - in what way are you having trouble with the graph

anonymous · Answer

I am having trouble setting the equation up to graph it.

anonymous · Answer

well draw a table of years from 1975 to say 2020 has heads of columns in steps of sat 5 years
and have a row below it with the sugar cosumption starting with 30 for 1975.

make the years the horizontal axis and consumption vertical.

Then plot the points. the graph will be a straight line.

anonymous · Answer

Ok. Thank you very much.

anonymous · Answer

no probs