Isabelle earns $200 a week at a bookstore plus $2 for every magazine she sells. She uses the equation to represent her earnings, where x represents magazine sales and y represents her weekly pay. If she needs to earn $280 next week to pay for her school trip, how many magazines does she need to sell?

40 magazines.

Step-by-step explanation:

She gets $200 from the book store the week she needs $280 for the school trip. Therefore, she only needs $80 in order to go.

$80 ÷ $2 = 40

40 magazines.

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.