Los alumnos de 1° G han organizado una campaña para conseguir dinero y enviarlo a un proyecto de cooperación. Para ello han vendido cajas de lápices de colores. En cada una de las 7 clases de 1° Eso vendieron 7 colores cada una. ¿Cuántos lápices han vendido en total?

49

Step-by-step explanation:

To find the number of color pencils sold you simply multiply the number of color pencils by the number of 1st classes:

- each class sold 7 color pencils

- there are seven 1st G classes

Then, you replace in the formula and you obtain:

hence, there were 49 color pencils sold

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !