If there are 520 grams of radioactive material with a half-life of 12 hours, how much of the radioactive material will be left after 72 hours? is the radioactive decay modeled by a linear function or an exponential function?

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?

Joanie watched 1 out of three of a movie in the morning

Ingredient c: 1/4 cup for 2/3 serving or ingredient d: 1/3 cup for 3/4 serving which unit rate is smaller