8. [-/10 Points] DETAILS HARMATHAP12 9.5.043. MY NOTES PRACTICE ANOTHER A travel agency will plan a group tour for groups of size 20 or larger. If the group contains exactly 20 people, the cost is $220 per person. If each person's cost is reduced by $10 for each additional person above the 20, then the revenue is given by the equation shown below, where x is the number of additional people above 20. R(x) = (20 + x)(220 - 10x) Find the marginal revenue if the group contains 25 people. $ I Interpret your result. The revenue will decrease by the absolute value of the marginal revenue in dollars if the group adds one person. The revenue will increase by the absolute value of the marginal revenue in dollars if the group adds one person. The revenue will decrease by $1 if the group adds the absolute value of the marginal revenue number of people. The revenue will increase by $1 if the group adds the absolute value of the marginal revenue number of people. The revenue will decrease by the absolute value of the marginal revenue in dollars if the group removes one person. Need Help? Read It Watch It