You swim in a 100-meter race. your best time is 59.48 seconds. you want to swim the race in 51.55 seconds. how much will you need to trim from your best time?

a. 7.93
b. 8.07
c. 8.13
d. 8.53

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

Which expression is not a polynomial?

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