Ashop is having a sale on t-shirts. if you buy the first t-shirt for $17, each additional t-shirt will cost $5. which formula models this situation?

an=17+(n-1)x5

an=5+(n-1)x17

an=22=(n-1)x5

an=(n-1)x17

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Which graph represents the linear function below? y-4= (4/3)(x-2)

The life, in years, of a certain type of electrical switch has an exponential distribution with an average life b = 2. if 100 of these switches are installed in dif- ferent systems, what is the probability that at most 30 fail during the first year?