Which of the following functions describes the sequence 1, 3, 7, 15, 31, 63, 127, … ?

A. f(1) = 1,f(n) = f(n − 1) + n for n > 1.
B. f(1) = 1,f(n) = 2n + 1 for n > 1.
C. f(1) = 1,f(n) = f(n − 1) + 2(n − 1) for n > 1.
D. f(1) = 1,f(n) = 2f(n − 1) + 1 for n > 1.

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.