Partial is the topic
It d is parthy constant and parthy varies v. When v=40, d=150 and when v=54,d=192
a find the formula commenting d and v
b: hence find d when v = 73

Answers

Answered by oobleck
d = a + bv
now solve
a + 40b = 150
a + 54b = 192
and then you can answer the questions
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