a medical researcher needs 6 people to test the effectiveness of an
experimental drug. if 13 people have volunteered for the test, in how many
ways can 6 people be selected? *

combination; 1,716 or permutation; 1,235,520

two people per drug and kick the othersstep-by-step explanation:

the answer is. -82562234434584

step-by-step explanation:

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: