The function c(t) below relates outside temperature in degrees fahrenheit to the number of cricket chirps per minute. it takes as input the temperature in degrees fahrenheit, and returns as output the number of cricket chirps per minute occurring at that time. c(t) = 6t - 180 which equation below represents the inverse function t(c), which takes the cricket chirps per minute as input and returns as output the temperature in degrees fahrenheit? a. b. c. d.

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.