If x = 12 inches and y = 18 inches, where y is the height of each triangle of the pyramid, what is the surface area of the figure?

Simply 8x squared + 5(7x squared- x) - 2x =

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?