Lisa's age is 4 years older than three times sammy's age. lisa is 28 years old. let s represent sammy's age.

which equation can be used to solve for sammy's age?

s + 4 = 28

3s + 4 = 28

4s + 3 = 28

3s = 28

This is different from the first one can someone me

How do you write y-10=2 (x-8) in standard form

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?