3. ricardo is enrolled in a video-game rental program. in the program, a certain number of rentals are free, and then a fee is charged for each rental. the fee for each rental is the same. the expression 3(r – 5) represents the total ricardo has paid for his rentals so far. the number of games he has rented so far is unknown. a. what does the first factor in the expression represent? explain how you know. b. what does the variable r in the second factor represent? explain how you know. c. what does the number 5 in the second factor represent? explain how you know.

Describe how making an ‘and’ compound sentence effects your solution set

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18