Eastimate 921 + 1,256 + 117 by first rounding each number to the nearst hundred

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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.