the graph below shows the amount of money left in the schools desk fund, f, after d desks have been…

the graph below shows the amount of money left in the schools desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the schools desk fund decrease? $110 $135 $165 $190

the graph below shows the amount of money left in the schools desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the schools desk fund decrease? $110 $135 $165 $190

Answer

Answer:

C. $165

Explanation:

Step1: Select two points

Select points $(2,480)$ and $(5,150)$.

Step2: Calculate change in money

Change in money $\Delta f=480 - 150=330$.

Step3: Calculate change in number of desks

Change in number of desks $\Delta d=5 - 2 = 3$.

Step4: Find decrease per desk

Decrease per desk $=\frac{\Delta f}{\Delta d}=\frac{330}{3}=165$.