What is the property of 7(3+4y)=21+28y

What is the area of the shaded sector?

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

An object is accelerating at a constant rate. its velocity in feet per second as a function of time in seconds can be modeled by the linear function v(t) = 2.5t. what does the dependent variable represent for this function? a) acceleration b) distance c) slope d) velocity