Please help me correct the red "x"

a. Using the worksheet below, determine what will be the contribution of the expanded lecture series given these estimates. b. Are there other factors the director should consider before making a decision? Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Using the worksheet below, determine what will be the contribution of the expanded lect a. Using the worksheet below, determine what will be the contribution of the expanded lecture series given these estimates. b. Are there other factors the director should consider before making a decision? Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Using the worksheet below, determine what will be the contribution of the expanded lect