you went to a coffee house with 2 friends and ordered an iced coffee and dessert which came to $12.96 how much is the tip if the rate is 15%

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

What is the equation of a line passing through (-6,5) and having a slope of 1/3

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