What is the mean of this set of numbers?

7, –9, 6, –10, –13, –5

a.
–4

b.
4

c.
–24

d.
7.7

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?

Which of the following represents the factorization of the trinomial below? x^2+7x-30

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the