Tina has 12 packages of yarn to knit a scarf. She uses 1/4 package of yarn for each inch of length she adds to the scarf. If Tina uses all the yarn, how long will her scarf be?

Idon't want to fail summer school.the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table.the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.