Quick given f(x)=x^2+14x+40 enter the quadratic function in vertex form f(x)=

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?