Arianna's Pizzeria made 19 pizzas. 15 of the pizzas had thin crust and the rest had thick crust. What is the ratio of the number of thick-crust pizzas to the number of thin-crust pizzas?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.