Em uma loja de materiais de construção há azulejos quadrados de lado y cm vendidos a R$ 40,00 por m². Há um outro modelo de azulejo, também quadrado, cujo lado é 5 cm maior que o outro e custa R$ 80,00 por m². Nessas condições, a razão entre o preço de uma unidade do azulejo maior e o preço de uma unidade do azulejo menor, em função de y, é: Dado: 1 m² = 10 000 cm².

(01.03 mc) which of the following is a step in simplifying the expression x multiplied by y to the power of 2 over x to the power of negative 3 multiplied by y to the power of 3, the whole to the power of negative 4. select one: a. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 7 multiplied by y to the power of negative 1. b. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of 12 multiplied by y to the power of negative 12. c. x to the power of negative 4 multiplied by y to the power of negative 8, the whole over x to the power of negative 3 multiplied by y to the power of 3. d. x to the power of negative 4 multiplied by y to the power of negative 2, the whole over x to the power of negative 3 multiplied by y to the power of 3.