46. use matlab to plot the polynomials y = 3x 4 − 6x 3 + 8x 2 + 4x + 90 and z = 3x 3 + 5x 2 − 8x + 70 over the interval −3 ≤ x ≤ 3. properly label the plot and each curve. the variables y and z represent current in milliamperes; the variable x represents voltage in volts.

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?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Venita is sewing new curtains. the table below shows the relationship between the number of stitches in a row and the length ofthe row. sewingnumber of stitches length (cm)51 131532024306what is the relationship between the number of stitches and the length? othe number of stitches istimes the length. o. the number of stitches is 3 times the length.