Brett has a $30 online gift voucher. he plans to buy as many books as he can . the cost of each book is $4. there is also a single shipping charge of $2. how many books can he afford without spending more than his gift voucher amount?

Afarm is to be built in the shape of quadrilateral abcd, as shown below. all four sides are equal. a rhombus abcd is shown with diagonal ac equal to 15.5 feet and diagonal bd equal to 13.2 feet. what is the area of the farm? pleas only pick from the 4 below 62 square feet 52.8 square feet 57.4 square feet 102.3 square feet