How many American adults must be interviewed to estimate the proportion of all American adults who actively try to avoid drinking regular soda or pop within +0.01 with 99% confidence using the large- sample confidence interval? Use 0.5 as the conservative guess for p

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)