Answer:
? can u take a pic of the question?
Step-by-step explanation:

7 + 14 + 21 + ... + 105 =
= 7(1 + 2 + 3 + ... + 15)
= 7(15)(16)/2
= 840
Answer:
(2,4)
Step-by-step explanation:
that would be the answer because when you reflect it over the Y axis you are making the y turn into a + or - depending on what it already is if y=-4 when you reflect it over the y it would be y=4
I think the person who answered above is right