Which equation best represents this situation? the number 84 increased by an unknown number is equal to 115.

a. 84 + c = 115
b. 84 - c = 115
c. 84 ÷ c = 115
d. 84c = 115

Plz need answer now will mark which situations represent linear functions? check all that apply. a)the temperature rises and falls over the course of a day. temperature is a function of time. b)a baseball is hit into the outfield. the height of the ball is a function of time. c)a car goes 55 mph on the highway. distance is a function of time. d)a child grew 2 inches this year and 1 inch last year. height is a function of time. e)a movie director makes 2 movies per year. the number of movies is a function of the years.

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.