Question

please help, simplified form

Answer 1

well the negatives and the s cancels out

Answer 2

no its 28t/5

Answer 3

ahh ok

Answer 4

yehh its 7t (:

Answer 5

yeh sure

Answer 6

D

Answer 7

well after the two runs he had 78

Answer 8

so if his last two were -5 and -7

Answer 9

then before them he would have had 5 and 7 more

Answer 10

so 78+5+7 runs in total (:

Answer 11

What's the question?

Answer 12

ahh, I understand, thank you!

Answer 13

no problemo (: