A (litres)
160
140
120
100
The amount of oil A left in a leaky barrel after...
Mathematics, 18.01.2021 01:00 Kkampudiaa
A (litres)
160
140
120
100
The amount of oil A left in a leaky barrel after
t minutes is shown on the graph alongside.
a Find the gradient and A-intercept of the line.
Interpret your answers.
b Find the model connecting A and t.
• How much oil will be left after 15 minutes?
d For what values of t is it reasonable to apply
this model?
60
20
2
4
6 8
t (minutes)
Answers: 2
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