Caitlin had $402 in her bank account. she withdrew $15 each week to pay for a swimming lesson. she now has $237.
a. write an equation that can be used to find the number of swimming lessons that she paid for.
b. how many swimming lessons did she pay for?
c. at the time she has $237, the cost of a lesson rose to $19. how many lessons can she pay for with her remaining $237?

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

We just started the introduction into circles and i have no idea how to do this.

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.