Alicia bought a notebook and several erasers at the student store. the graph shows the relationship between the total cost of her items and the number of erasers she purchased.
 


what is the cost of each eraser?

$1.00

$1.50

$2.00

$3.50

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value