She said that 9/8 and 1 were equal.. explain her error

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

If rt is greater than ba, which statement must be true ?

Find the zeros of each function. f(x) = x^2 + 5x - 6