Uma lanchonete vende dois tipos de sanduíche: o simples que contem uma fatia de carne, 1 fatia de queijo e uma fatia de presunto e o duplo, que contém duas fatias de carne, 2 fatias de queijo, 1 fatia de presunto, tomate e alface. se alguém comprar quatro sanduíches simples e cinco duplos pagará r$ 105,00. se comprar cinco sanduíches simples e sete duplos pagara r$ 138,00. qual é o preço de cada sanduíche?
socorro não sei como se faz isso

Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn.how many hours was natasha asleep on the beach?

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.