What is the correct answer?

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

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?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m