F(x)= 1, g(x) = 2x +1
a. use composition to prove whether or not the functions are inverses of each other.
b. express the domain of the compositions using interval notation.

Which of the following statement about pascal's triangle are true?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

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.