Trina has 17 beads, nine blue and 8 red. how can she make a color pattern?

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

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

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!