Kira's retirement party will cost $38.48 if she invites 37 guests. What is the maximum number of guests there can be if Kira can afford to spend a total of $79.04 on her retirement
party? Solve using unit rates.

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

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.