The school drum line is traveling to a competition. Their van has a maximum carrying capacity of 1600 pounds. The people in the van weigh 1450 pounds, and each drum set weighs 19 pounds each. What is the maximum number of allowable drum sets to travel safely?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.