The probability that Tom will buy a tie is 0.2, for a shirt is 0.3, and the probability he will buy a tie given that he buys a shirt is 0.4. What is the probability that he will buy a shirt given that he buys a tie?

*(T and S)= 0.12

Suppose the first five terms of a sequence are 4, 5, 9, 27, 123. how could the next term in the sequence be generated?

Brent wants to know what is 5 x 1/2

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?