PLS HELP Use a trigonometric ratio to find the value of x.

Can some one me with this math problem?

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?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7