12x + 10 = px + 10 In the given equation, p is a constant. if the equation has exactly one solution, which of the following could NOT be a value of p?
A. 10
B. 11
C. 12
D. 13

pls show work I’m stuck on this question I need help

Having a hard time understanding this question (see attachment).

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?

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?