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After 12 days you have 800 lbs of plutonium left to fuel your nuclear reactor. After 30 days you have 755 lbs. Find the equation of the line (in slope-intercept form).How much fuel will you have after 120 days?

Answer :

m=(755-800) /30-12
m= -45/18 or -2.5

y-800 = -2.5(x-12)
y-800 = -2.5x + 30
y = -2.5x + 830

y = -2.5(120) + 830
y = 530 lbs

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