Noah manages a buffet at a local restaurant. He charges $10 for the buffet. On average, 16 customers choose the buffet as their meal every hour. After surveying several customers, Noah has determined that for
every $1 increase in the cost of the buffet, the average number of customers who select the buffet will
decrease by 2 per hour. The restaurant owner wants the buffet to maintain a minimum revenue of $130 per
hour.
Noah wants to model this situation with an inequality and use the model to help him make the best pricing decisions. write two expressions for the cost and customers

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.