The table shows how the radioactivity in iodine-131 decreases over time. the initial
amount is 2.00 grams.
radioactivity in iodine-131
day 1 2 3 4 5 6 7 8
grams 1.83 1.68 1.54 1.41 1.30 1.19 1.091.00
calculate the average rate of change in grams per day from day 4 to day 7. write the
answer as a decimal rounded to the nearest hundredth.

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 104 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 105 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Aline passes through 3,7 and 6,9 what equation represents the line