The half-life of an isotope is 20 years. A sample initially contains 100 grams of the isotope. The function that predicts the amount of isotope present in the sample ( A ) as a function of time in years ( t ) is A = 100 ( 2 − t 20 ) . Which graph below represents this function?

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

Answer this question! 30 points and brainliest! only if you know the answer.

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.