1/8 of pizza costs 2 dollars. in an hour, 6 1/4 pizzas were sold. how much money was made at the food booth in that hour

Can some one me with these questions

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

Which expression is the factorization of x^2+10+21