(Writing systems of Equations) Jenny bought supplies for a party. Three rolls of streamers and fifteen party hats costs $30.Later she bought two rolls of streamers and four party hats for 11$.Write a system of equations that can be used to determine the cost of each item.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Jose bought 20 shares of netflix at the close price of $117.98. in a few years, jose sells all of his shares at $128.34. how much money did jose make? a.) $192.50 b.) $207.20 c.) $212.50 d.) $224.60