Jessica is selling books during the summer, can someone out

Option B is the answer - For each additional door she knocks on, her earnings increase by $7.

Step-by-step explanation:

The linear equation is given as :

Now we will check the equation by putting values of x in it.

Say if Jessica knocks 10 doors ,

= $45

If she knocks 11 doors ,

= $52

If she knocks 12 doors ,

= $ 59

Rate of change is

We can see that, there is a constant increase of $7 with each increased door she knocks.

Therefore, option B is the answer.

answerthe vertex form

step-by-step explanation: