What is f(-3) for the function f(a)=-2a^2-5a+4

Last year amusement park received 236,758 visitors it was open every day of the year but 7 holliday’s what was the average number of visitors to the park per day

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

If two points are given, then exactly one line can be drawn through those two points. which geometry term does the statement represent