PLEASE HURRY Keiko purchased a prepaid phone card for $25 . Long distance calls cost 9 cents a minute using this card. Keiko used her card only once to make a long distance call. If the remaining credit on her card is $23.92 , how many minutes did her call last?

___ minutes

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Find the vertex of the function given below y=x^2-6x+1

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain