Consider the discrete probability distribution in the following table
X 4 5 6 7
P(X) .4 .1 .2 .3
Find P(X=4), P(X<4), and P(X=4 or X=5).

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

What is the domain of the step function f(x)=[2x]-1?