Question

The number of roses purchased in a proportional to the total cost of modeled in the graph shown. Four roses cost five dollars as represented by point R. what is the cost of one rose?

Answer 1

Since we see that the behavior is linear, we will get that the cost of 1 rose will be:

$c=\frac{1\cdot5}{4}\Rightarrow c=1.25$

One rose will cost $1.25.