Determine whether each sequence is a geometric sequence. If yes, then state the common ratio. 120, -60, 30, -15,...

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

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?