Given the sequence 4, 8, 16, 32, 64, ..., find the explicit formula.
A. an=10(2n−1)
B. an=4(2n−1)
C. an=5(2n−1)
D. an=20(2n−1)

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?