Need help with this problem

Is there a typo in this page of work? It should be $225 more... But this isn't an option... I'm not sure... Is it possible to contact a teacher?

Step-by-step explanation:

7/10 of $450 is $315

Online price: $315

6/5 of $450 is $540

Other department store: $540

$540-$315=$225

This doesn't make sense at all... sorry...

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (:

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.