12) on the first day of school, all of the incoming freshmen attend an orientation. The principal wants to learn the opinions of the freshmen regarding the orientation program. He decldes to ask the first 25 freshman that he sees. Determine whether the sample method could result in a biased sample. Explain your reasoning ​

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?

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

What numbers are included in the set of integers? what numbers are not included?