The best whole number problem to estimate 53/4-21/8=

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

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In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.