I'd really appreciate it if anyone could ! : ) i'll give brainliest! the graph of a function is shown below these choices. select all the statements that correctly describe this function. the equation that represents this function is f(x)=−7x+1. the equation that represents this function is f(x)=x−7. the range of this function is increasing as the domain increases. the range of this function is decreasing as the domain increases.

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.