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

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

3. solve the given inequality and graph the solution on a number line.