Find the limit if it exists lim x→0 sqrtx+7-sqrt7 over x

Afootball is throw by a quarterback to a receiver

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Which statement is true about the extreme value of the given quadratic equation? a. the equation has a maximum value with a y-coordinate of -21. b. the equation has a maximum value with a y-coordinate of -27. c. the equation has a minimum value with a y-coordinate of -21. d. the equation has a minimum value with a y-coordinate of -27.