What is the value of one to the -2nd power

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?

Write the expression as a single natural logarithm. 2 in a - 4 in y

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.