What is the mean of this set of numbers?

7, –9, 6, –10, –13, –5

a.
–4

b.
4

c.
–24

d.
7.7

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve. someone !