There are 40 pupils in a class. there are x more girls than boys. how many boys are there in terms of x?

Find the area of the regular hexagon if a side is 20 cm.

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.