Members of the wrestling team are planning to sell pre-ordered programs at matches. The cost to print the programs is \$150$150dollar sign, 150 plus \$0.50$0.50dollar sign, 0, point, 50 per program. They plan to sell each program for \$2$2dollar sign, 2. If profit is the amount of money earned from selling programs minus the expenses of printing the programs, how many programs must they sell to make a profit of at least \$500$500dollar