1. Let the constant part of D be represented by k. Then we can write:
D = k + vw
where v is the variable part of D that varies with w.
Using the given values, we can set up two equations:
515 = k + 1150v
625 = k + 2250v
Solving for k and v, we get:
k = 290
v = 0.1
Therefore, the relationship between D and W is:
D = 290 + 0.1W
2. To find D when W = 1000, we can substitute W = 1000 into the equation we found in part 1:
D = 290 + 0.1(1000)
D = 390
Therefore, when W = 1000, D = 390.
D is partly constant and partly varies with w. When D =515 W= 1150 , D =625 W =2250
1. FIND THE RELATIONSHIP BETWEEN D AND W
2. FIND D WHEN W= 1000
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