On sunday, sheldon bought 3 and 1/2kg of plant food. he used 1 and 2/3kg on his strawberry plants and used 1/4 kg for his tomato plants . how many kilogramsof plant food did sheldon have left? write one or more equations to show how you reached your answer.

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