Answer:
y = 2.5x
Explanation:
I don't know what your choices are, but the equation is
y =
x
or y = 2

or y = 2.5x They all mean the same thing.
This means that in 1 minute you can package 5/2 or 2.5 calculators.
You find the rate by the change in y over the change in x.
You have two points given (10,25) and (30,75)
= 2.5 or

= 2.5 or

Helping in the name of Jesus.