I need this answered, please. Find the discriminant and use it to determine the number of real solutions of the equation. If the equation does not have real solutions, tell whether they are rational or irrational. Do not actually solve the equation.
x^2+8x+16=0

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Arepresentative from plan 1 wants to use the graph below to sell health plans for his company how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans?