In 2011, a collector of sports memorabilia purchased specific baseball cards as an investment. let y represent each card’s resale value (in dollars) and x represent the number of years since purchase. each of the cards’ resale values after 0, 1, 2, 3, and 4 years could be modeled by linear functions as follows:

card a: y=3−0.8x ,card b: y=7+2.7x ,card c: y=15+0.9x ,card d: y=14−3.1x ,card e: y=5+0.25x

select all cards that are decreasing in value.

question 3 options:

a)

card e: y=5+0.25x

b)

card d: y=14−3.1x

c)

card b: y=7+2.7x

d)

card c: y=15+0.9x

e)

card a: y=3−0.8x
more than one answer.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

(c) compare the results of parts (a) and (b). in general, how do you think the mode, median, and mean are affected when each data value in a set is multiplied by the same constant? multiplying each data value by the same constant c results in the mode, median, and mean increasing by a factor of c. multiplying each data value by the same constant c results in the mode, median, and mean remaining the same. multiplying each data value by the same constant c results in the mode, median, and mean decreasing by a factor of c. there is no distinct pattern when each data value is multiplied by the same constant. (d) suppose you have information about average heights of a random sample of airline passengers. the mode is 65 inches, the median is 72 inches, and the mean is 65 inches. to convert the data into centimeters, multiply each data value by 2.54. what are the values of the mode, median, and mean in centimeters? (enter your answers to two decimal places.) mode cm median cm mean cm in this problem, we explore the effect on the mean, median, and mode of multiplying each data value by the same number. consider the following data set 7, 7, 8, 11, 15. (a) compute the mode, median, and mean. (enter your answers to one (1) decimal places.) mean value = median = mode = (b) multiply 3 to each of the data values. compute the mode, median, and mean. (enter your answers to one (1) decimal places.) mean value = median = mode = --