At the local ballpark, the team charges $4 for each ticket and expects to make $1,400 in concessions. The team must pay its players $1,000 and pay all other workers $1,900. Each fan gets a free bat that costs the team $2 per bat. How many tickets must be sold to break even?

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.