How many prime numbers are of the form 10n + 1, where n is a natural number such that 1 ≤ n < 10

For the function, f(x) = -5x 2, find f(-4).

Find the balance at the end of 4 years if 1000 is deposited at the rate of

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?