Leroy purchased 6 gallons of gasoline for $19.56. Which describes the constant of proportionality (k)? N A) $2.26 per gallon B) $3.26 per gallon $3.29 per gallon D) $3.39 per gallon​

3.26

Step-by-step explanation:

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !