可汗
6.Dimitri is helping to plan the school talent show. Each performer for the talent show has 6 minutes for his or her performance, which includes transition time between performances. If the introduction for the talent show is 24 minutes long and the show will last 150 minutes, how many different performances can the talent show accommodate?
A. 21
B. 24
C. 25
D. 29
correct answer: A difficult degree: 2
7.The property taxes in a town decrease as the distance from the local elementary school increases. The greatest property taxes are 4.5%, and for every 10 miles from the school, property taxes decrease by 0.5 percentage points. If a house is directly east or west of the school and its property taxes are 3%, what is the distance of that house from the school?
A.10 miles
B.20 miles
C.30 miles
D.40 miles
correct answer: C difficult degree: 2
