HELP ASAP I WILL MARK BRAINLIST IM BEGGING YOU!!

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

3x + 4y = 5 x- 3y = -7 solve by substitution

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2