an elevator in a skyscraper rises 240 feet in 1/5 minute. What is the elevator's rate in feet per minute?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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

Calculate ∬y da where r is the region between the disks x^2+y^2 < =1 & x^2+(y-1)^2 < =1 show all work. (also explain why you split up the regions)