An electric power plant uses solid waste for fuel in the production of electricity. The cost Y in dollars per hour to produce electricity is Y=8+0.6X+0.15X2, where X is in megawatts. Revenue in dollars per hour from the sale of electricity is 16X0.3X2. Find the value of X that gives maximum profit. The value of X that gives maximum profit is megawatts (Round to two decimal places.)