You need to purchase a year's subscription for engineering software for 10 people in your firm.The software salesperson offers 2 plans. Plan Ab an unlimited plan that 50 per month for the operating costs for each use: Which is the less expensive plan for the 10 people in your firm and by how much? charges a onetime setup fee of 500 and 5,500 for the operating costs for 1 year for an unlimited number of users. Plan B charges a 50 setup fee per user and A PlanAby 500 B. Plan Aby 1,000 C. Plan Bby 500 D. Plan Bby 5,000 E The plans cost the same.

To determine which plan is less expensive for 10 people in your firm, we need to calculate the total cost for each plan.<br /><br />**Plan A:**<br />- One-time setup fee: \( \$500 \)<br />- Operating costs for 1 year: \( \$5,500 \)<br />- Total cost for Plan A: \( \$500 + \$5,500 = \$6,000 \)<br /><br />**Plan B:**<br />- Setup fee per user: \( \$50 \)<br />- Monthly operating cost per user: \( \$50 \)<br />- Number of users: 10<br />- Total setup fee for 10 users: \( 10 \times \$50 = \$500 \)<br />- Total monthly operating cost for 10 users: \( 10 \times \$50 = \$500 \)<br />- Total yearly operating cost for 10 users: \( 12 \times \$500 = \$6,000 \)<br />- Total cost for Plan B: \( \$500 (setup fee) + \$6,000 (yearly operating cost) = \$6,500 \)<br /><br />Comparing the total costs:<br />- Plan A: \( \$6,000 \)<br />- Plan B: \( \$6,500 \)<br /><br />Plan A is less expensive than Plan B by \( \$6,500 - \$6,000 = \$500 \).<br /><br />Therefore, the correct answer is:<br />A. Plan A by \( \$500 \).