Cuanto costara una sala que se anuncia en $7500, con el 30% de descuento mas 16% de IVA

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?