A science teacher fills a spherical bubble with hydrogen gas. The bubble has a diameter of 8 centimeters. Find the volume of hydrogen gas. Round your answer to the nearest tenth, if necessary.
O 50.3 cm
O 100.5 cm?
O 268.1 cm?
O 2, 144. 7 cm

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee