A lighting consultant wants to know how a new battery will perform in an LED strip. The consultant randomly samples 25 batteries from a recent shipment and tests how
many hours each battery keeps the strip lit at full capacity. The results are presented
in the dot plot.
Battery Life While Lighting an LED Strip
HHH
19 20
25
26
21 22 23 24
battery life (hours)
If the entire shipment contains 1,750 batteries, calculate the number of batteries the
consultant should expect to have for the listed subset of hours.
20 hours:

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)

Find the axis of symmerty for x y=x squared -4x-8